You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Please reserve a flight ticket from CLT to BOS for my business trip.

ASSISTANT: Sure, when your planning to go?

USER: I am planning to move on Feb 14 and please book my return ticket also on Feb 16.

ASSISTANT: Do you prefer any connection limit?

USER: No, I need a direct flight.

ASSISTANT: May I know your any specifications?

USER: I don't have any other specifications.

ASSISTANT: There is a direct flight in Delta airlines with the fare 200.

USER: I am ok with this flight, you can proceed with booking now.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: May I know your name?

USER: My name is Alexander Jackson.

ASSISTANT: Thank you.

USER: Welcome.