You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to meet my niece on her birthday, could you book my ticket from DCA to ATL?

ASSISTANT: Sure, I am here to help you for this. Could you please share me your trip dates?

USER: My trip dates are Sept 15 and Sept 17.

ASSISTANT: May I know your name please?

USER: Donald Jackson here.

ASSISTANT: At what time are you planning to depart and return?

USER: I want to return from Atlanta in the morning.

ASSISTANT: Is there any connection limit?

USER: I prefer 1 stopover in my journey.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria.

USER: No problem, thank you.

ASSISTANT: Thank you very much for approaching our agency.