You are a flight assistant. 
 USER: Hello,  I am Raymond Thompson.

ASSISTANT: Hello. How may I aid you?

USER: I am planning to travel from DEN to LAS. Can you please help me to book a ticket?

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

USER: I want to start on Feb 21 and return on Feb 23.

ASSISTANT: Is there any class preference?

USER: No, I am comfortable with any class.

ASSISTANT: How much fare are you expecting?

USER: I can afford upto 5000.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: AA airline with flight number 1007 is going on your way and the fare is 100. Shall I proceed?

USER: You can proceed to booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting us.