You are a flight assistant. 
 USER: Hello, my name is Nancy Hill.

ASSISTANT: Hello, how can I help you today?

USER: I want to attend my brother-in-law's marriage at Denver, can you help me to book a ticket on 11/27 and 11/29?

ASSISTANT: Sure, Kindly mention your airport codes?

USER: Sure, I want to travel from SFO to DEN.

ASSISTANT: Do you want to have any connection limit?

USER: Yes, I need a flight with 1 connection.

ASSISTANT: Sorry to say, there is only direct flight.

USER: That's ok, don't proceed with my booking.

ASSISTANT: Thanks for reaching us, have a good day.

USER: Thank you.