You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I would like to travel from DFW to PHX as a business trip. Can you help me to book a ticket?

ASSISTANT: Sure, on what dates are you willing to travel?

USER: My trip dates are 09/14 and 09/16.

ASSISTANT: Do you need a lay by?

USER: I need break in my journey.

ASSISTANT: Is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: How much airfare are you looking for?

USER: Price should not cross 5000.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: There is an Delta airline with flight number 1000 is going on your way and the fare is 300. Is that fine?

USER: Please proceed.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: May I know your name for documentation purpose?

USER: Andrew Robinson here.

ASSISTANT: Thank you.