You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I need you to book a flight ticket from SFO to CLT. Please help me.

ASSISTANT: Sure, please provide your trip dates.

USER: March 29 and 31, are my planned travelling dates.

ASSISTANT: Do you need any connection limit?

USER: I need a break in my journey.

ASSISTANT: Do you have any other specifications?

USER: I would like to fly in a business class flight.

ASSISTANT: May I know your name?

USER: My name is Anthony Harris.

ASSISTANT: There are no flights available on your routes.

USER: That's ok. Thank you.

ASSISTANT: Thank you for choosing us.