You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you for the day?

USER: I need to travel to CLT for attending music concert, can you please help me to reserve ticket from JFK?

ASSISTANT: Sure, can you please forward your journey dates?

USER: Sure, my travelling dates are Apr, 11 and 13.

ASSISTANT: In which class you prefer to book your flight ticket?

USER: I fine with any class preference to travel.

ASSISTANT: Do you prefer any stopover in between journey?

USER: Yes, flight has to be with a single connection.

ASSISTANT: Ok, please be on hold.

USER: Sure, I need a depart time at morning.

ASSISTANT: Sorry, there are no flights are available matching your specifications. May I know your name please?

USER: Ok, not an issue. Sure, my name is Kimberly Lewis here.

ASSISTANT: Ok, thank you for approaching us.

USER: Thank you for your information.