You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Betty Lee, I want to book a flight on 04/19 and I will return on 04/21 to visit Trade fair at Phoenix. Can you book a connecting flight for me?

ASSISTANT: Sure, may I know your journey points?

USER: My source point is TX-IAH and my destination is AZ-PHX.

ASSISTANT: Do you have any preference?

USER: My budget for flight ticket is 500.

ASSISTANT:  We found a connecting flight Hawaiian with flight number 1000 and fare is 100.

USER: Please proceed with booking.

ASSISTANT:  Your booking is confirmed.

USER: Thank you for helping me.

ASSISTANT:  Thank you for availing us.