You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I planned to meet my friend in DFW, can you please help me to book a flight ticket from JFK?

ASSISTANT: Sure, I am here to help you with that, can I know your trip dates?

USER: I prefer to travel on May 19 and May 21.

ASSISTANT: Do you have any connection limit?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Is there any other specifications?

USER: I would like to travel in economy class.

ASSISTANT: Can I know your good name?

USER: I am Kenneth Thompson.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.