You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Could you please help me with booking ticket from IAD to MSP?

ASSISTANT: Sure, may I know your trip dates?

USER: Ok, my trip dates are from Sept 15 to 17.

ASSISTANT: Do you need any connection between your trip?

USER: I need a connecting flight.

ASSISTANT: To proceed further, I need your name to proceed.

USER: Sure, I am Lisa Harris.

ASSISTANT: Do you need any other requirements?

USER: I would like to return in the afternoon time.

ASSISTANT: We regret to inform you that there is no flight going on your way.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for opting us.