You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How can I assist you today?

USER: As I need to travel Atlanta, GA-ATL, please book a ticket from Dallas & Fort Worth, TX-DFW.

ASSISTANT: Sure, I am glad to help you, may I know your travelling dates?

USER: Depart date is 12/22 and will return by 12/24.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: There is a direct flight which matches your travelling dates. Shall I proceed with booking?

USER: Please provide connecting flight.

ASSISTANT: Sorry, there is no connecting flight.

USER: Thanks for the help.

ASSISTANT: Thank you for approaching us. May I know your name?

USER: My name is Samuel Collins.