You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you please make a reservation between AUS and ATL for my business meeting?

ASSISTANT: Sure, may I know your travel dates?

USER: Thank you for accepting my request, I am planning to move on Dec 15 and please book my return ticket on Dec 17.

ASSISTANT: Do you have any specifications?

USER: I will prefer single connected and economy class flight.

ASSISTANT: May I know your name?

USER: Sure, my name is Susan Clark.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Oh! Sad to hear that. Anyway, I will find another alternative. Thank you for checking.

ASSISTANT: Thank you for contacting us.