You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Please book a flight ticket from JFK to MSP?

ASSISTANT: Please mention your travelling dates?

USER: My journey dates are Dec 09 and Dec 11.

ASSISTANT: Is there any connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your good name?

USER: I am Helen Turner.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Do you have any particular timings to travel?

USER: I prefer a return flight time at afternoon.

ASSISTANT: May I know your class preference?

USER: No.

ASSISTANT: There is no flights found with your required dates to travel.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for choosing us.