You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am looking for a flight from ORD to DTW, can you please help me in booking?

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

USER: My travelling dates are Nov 16 and Nov 18.

ASSISTANT: Do you have any connection limit preference?

USER: I need a direct flight.

ASSISTANT: Could you help me with your name please?

USER: My name is John Gonzalez.

ASSISTANT: For the mentioned dates there are no flights available, sorry for the inconvenience caused.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.