You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I aid you?

USER: I am Kathleen Miller. I would like to visit The International Society for Krishna Consciousness at Denver, DEN. Can you please make a reservation on 04/04?

ASSISTANT: Sure. Can you please provide your take off airport code?

USER: My take off airport is Charlotte, CLT.

ASSISTANT: When would you like to return?

USER: I would like to return from Denver on 04/06.

ASSISTANT: We found a Frontier airline, flight number:1008 and the price is 100. Can I reserve it?

USER: Ok, reserve it.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you.