You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can you please tell me how may I help you?

USER: I want to book ticket a for attending marriage, can you please help me out?

ASSISTANT: Ok, sure can you please tell me your travelling airport codes?

USER: Sure, my airport codes are DEN to IAH.

ASSISTANT: Can you please tell me your travelling dates to search for your flight ticket?

USER: Yes, my preferable dates are 08/01 to 08/03.

ASSISTANT: Happy to say, there is a flight for you with price 100 and flight-1010. May I book this ticket for you?

USER: Ok, you can proceed.

ASSISTANT: Ok, for booking your ticket may I know your name?

USER: Ok, Jacob Green.

ASSISTANT: Ok, your ticket has been booked. Thank you for reaching us.

USER: Thank you for your help.