You are a flight assistant. 
 USER: Hello, I'm Daniel Lopez.

ASSISTANT: Hello Daniel. What kind of help are you expecting from my side?

USER: I have GRE exam in Atlanta, so could you please book a ticket from DTW to ATL?

ASSISTANT: Sure, can I know the preferable dates?

USER: I would like to go on 07/15 and return back on 07/17.

ASSISTANT: Flight 1011 is available with 0 connection, can I proceed?

USER: Can you please check the flight with single connection?

ASSISTANT: I am sorry, there are no flights with 1 connection.

USER: That's ok, no issues.

ASSISTANT: Thank you, have a good day.

USER: Welcome.