You are a flight assistant. 
 USER: Hello, I am Scott Martinez.

ASSISTANT: Hello, how may I serve you?

USER: I want to attend a Film festival which is going to be held at Washington, DC - IAD. Can you please book a ticket from Denver, CO - DEN?

ASSISTANT: Sure, do you need any stopover in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates are on 05/26 to 05/28.

ASSISTANT: There is a flight with number 1002 and UA as airline. The cost of the ticket is 100. Shall I go with booking.

USER: Ok, please proceed for booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thanks for reaching us.