You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I need to book a flight ticket from IAH to CLT, Can you please help me for booking?

ASSISTANT: Sure, can I know your travelling dates?

USER: I would like to travel on 11/20 to return on 11/22.

ASSISTANT: Do you need a connecting flight?

USER: I need a connecting flight.

ASSISTANT: May I know your other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: Jack Hall here.

ASSISTANT: There is a flight of delta airline, flight number 1011 with the fare of 200. Can I proceed?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your information.

ASSISTANT: Thank you for choosing us.