You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: This is Barbara Williams from Charlotte. I am planning to visit one of the historical place in JFK, would you please assist me in making an airline reservation from CLT?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: My travelling dates are Dec 1st and Dec 3rd.

ASSISTANT: Ok, do you have any connection limit?

USER: No, I need a direct flight.

ASSISTANT: Ok, please share me your specifications.

USER: The depart time and arrival time should be afternoon.

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

USER: Ok, no worries at all. Thank you.

ASSISTANT: Welcome, have a nice day.