You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Carolyn Lee from Houston. I have to go Boston for my film shooting purpose, can you please book a flight ticket for me?

ASSISTANT: Sure, I will help you in booking the ticket.

USER: Thanks.

ASSISTANT: May I know your travelling dates please?

USER: I want to take off on 01/21 and book my return ticket also on 01/23.

ASSISTANT: Can I know your airport codes too?

USER: I would like to fly from IAH and destination airport is BOS.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

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

USER: Please book this flight ticket for me.

ASSISTANT: Ok, your ticket has been booked with flight number 1001.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.