You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me in reserving the ticket from HOU to ATL?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: I am planning my trip on Sept 17 and again I will return back on Sept 19.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I am comfort to travel in single connection flight.

ASSISTANT: Do you have any class preference?

USER: I am planning to travel in economy class.

ASSISTANT: Do you have any particular time for departing and returning?

USER: My depart time is afternoon.

ASSISTANT: May I know your good name please?

USER: Myself Thomas Campbell.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Not a big deal, anyhow thank you very much for your kind information.

ASSISTANT: Thank you for reaching us.