You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Sharon Wilson, I want to book a flight ticket from IAD to DEN.

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

USER: Sure, my travelling dates are 11/10 and 11/12.

ASSISTANT: OK, please wait for a while.

USER: sure.

ASSISTANT: THere is a flight with connection 1 and price 100, can I proceed with this flight?

USER: Yes, please proceed.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.