You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to book a flight from IAH to DCA can you help me with that?

ASSISTANT: Sure, I will help you. May I know your travel dates?

USER: My travelling dates are Oct 12 to Oct 14.

ASSISTANT: Do you prefer economy or business class?

USER: I am comfortable with any class.

ASSISTANT: On which name do you like to reserve this ticket?

USER: I am Gary King.

ASSISTANT: We found a flight on your details with airline AA, flight number: 1003. Shall I book this ticket?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.