You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I have planned to book a plane ticket from JFK to CLT, can you assist me in booking my ticket?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My preferred dates are Dec 27th and Dec 29th.

ASSISTANT: Do you have any limits on number of connections?

USER: I need single connection between my trip.

ASSISTANT: Do you have any another specifications on your journey?

USER: Make sure that my return time must be evening.

ASSISTANT: May I know your name for the booking process?

USER: Susan Wright.

ASSISTANT: Sorry, no flights are available on that route.

USER: No problem, thank you for searching.

ASSISTANT: Welcome, thank you for reaching us.