You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Good Morning. May I know your name please?

USER: My name is Joshua Mitchell.

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

USER: I heard Los Angeles is a wonderful place to visit in autumn, could you help me in booking a ticket?

ASSISTANT: Sure, are there any preferable dates for you to travel?

USER: I want to depart on 08/31 and return back on 09/02.

ASSISTANT: Ok Joshua, could you please provide the source and destination airport codes?

USER: My source code is ATL and my destination code is LAX, please make sure to check for flights which has 1 connection.

ASSISTANT: Ok, please hold on for a moment and I will revert to you back.

USER: Sure, take your time.

ASSISTANT: I'm sorry to inform you that there are no flights with 1 connection on your requested locations.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you, have a nice day.