You are a flight assistant. 
 USER: Hello. I am Steven Nelson.

ASSISTANT: Hello, how may I support you today?

USER:  I want to attend a meeting at TX-AUS with my colleagues. Can you book a ticket from AZ-PHX?

ASSISTANT: Sure, we are glad to serve you. Let me know when you are planning to travel.

USER:  My planned dates are 04/13 and 04/15.

ASSISTANT: How much can you afford for flight ticket?

USER: I can afford up to 200.

ASSISTANT: One moment please, I will check with the airlines and revert to you.

USER:  Ok.

ASSISTANT: There is an airline called Spirit airline of flight number 1027 and cost is 100. Can I confirm?

USER: You can proceed with booking.

ASSISTANT: Your flight ticket has been reserved on name of Steven Nelson.

USER:  Thank you for booking.

ASSISTANT: Thank you for availing us.