1- In reply, to your request to arrange a meeting for future cooperation, we would appreciate it if you gave us more details about the project which you're planning to do in Iran. 2- In reply to your request and to also arrange a meeting for future cooperation, we would appreciate it if you would send/forward us more details about the project which you're planning undertake in Iran.

I agree with John's sentences, except the "which" needs to be changed to "that" - at least in American English.

I'd go with 1. "to arrange a meeting" and I think "collaboration" might be more inclusive than "cooperation". I also like John's "which you're planning to do in Iran".

1- In reply to your request and TO arrange a meeting for future cooperation, we will appreciate if you give us more details about the project which you're planning to conduct in Iran. 2- In reply to your request and FOR arranging a meeting for future cooperation, we would appreciate it if you give us more details about the project which you're planning to conduct in Iran.