You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Can you please help me to book a flight ticket from ATL to DCA?

ASSISTANT: Sure, can you please forward your journey dates?

USER: Thank you for accepting my request. My journey dates are Aug 19 and Aug 21.

ASSISTANT: May I know your name please?

USER: I am Andrew Lewis.

ASSISTANT: Please let me know your connection limit.

USER: I prefer a single connecting flight to travel.

ASSISTANT: Are there any more specifications?

USER: I would like to depart in the morning time.

ASSISTANT: Sorry to inform you that, we could not find any reservation on your name.

USER: It's ok, I will choose some other source to travel. Thank you for your time.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.