You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Please help me in booking a flight ticket from LAX to PHL.

ASSISTANT: Sure, let me know your trip dates please?

USER: Nov, 17 and Nov, 19 are my trip dates.

ASSISTANT: May I know your connection limit?

USER: I would prefer single connection.

ASSISTANT: Do you need any other preference?

USER: I need to return at morning time.

ASSISTANT: Can I know your name please?

USER: Carol Miller here.

ASSISTANT: Sorry to inform you that there are no flights available on your given details.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.