You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I give assistance to you?

USER: Can you please check the availability of flights in between the points DEN and JFK?

ASSISTANT: Sure, Can you please mention your connection limit?

USER: Sure, I usually prefer a connecting flight.

ASSISTANT: Ok, Do you have any class preference?

USER: No, I am comfortable with any class.

ASSISTANT: Sure, May I know your airline preference?

USER: Sure, I need a flight with normal cost.

ASSISTANT: Ok, please share your planned journey dates.

USER: My travelling dates are Jan 10 and Jan 12.

ASSISTANT: To proceed further, may I know your name?

USER: Sure, I am Rebecca Roberts.

ASSISTANT: Thanks for your details, please wait.

USER: Ok.

ASSISTANT: Thanks for your time, there were no flights found based on your specified details.

USER: Ok, no worries. Thank you.

ASSISTANT: Thank you for choosing us.