You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I am Shirley Allen want to fly from TX-IAH to NY-JFK to attend a musical concert.

ASSISTANT: Ok.

USER:  Can you book a connecting flight?

ASSISTANT: Sure. May I know your travelling dates?

USER: My travelling dates are 04/21 and 04/23.

ASSISTANT: Do you have any preferences?

USER: Make sure price should not exceed 5000.

ASSISTANT: There is a flight 1005 in Southwest airline and price 100 with a connection. Shall I proceed?

USER:  Ok, you can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER:  Thank you for booking.

ASSISTANT: Thank you.