You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Will you please book me a flight ticket from IAH to ATL?

ASSISTANT: Your travelling dates please?

USER: My departure must be on Dec 11th and return must be on Dec 13th.

ASSISTANT: Do you have any specifications?

USER: I need 1 stop over within my route. I would prefer to travel in a major cost airline.

ASSISTANT: There is a flight with single connection in united airlines, can I proceed for booking in 1021 flight?

USER: Fine, please proceed.

ASSISTANT: On which name can I proceed for booking?

USER: Please make the reservation under the name Sharon White.

ASSISTANT: Your booking is done in economy class.

USER: Thanks for your support.

ASSISTANT: Thank you for choosing us.