You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER:  I need to book a flight ticket.

ASSISTANT: Sure, I will help you out. May I know your travelling dates please?

USER: February 10 and 12 are my travelling dates.

ASSISTANT: Can I know the airport codes too?

USER: DFW and DEN are my to and fro airport codes.

ASSISTANT: Can I know your name please?

USER: Myself Andrew Lee.

ASSISTANT: There is a flight with connection 1 and price 200, can I proceed?

USER: Yes, you can proceed.

ASSISTANT: Ok, your ticket has been booked with flight number 1005.

USER: Thank you for the assistance.

ASSISTANT: Thank you for reaching us.