You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I planned to meet my friend in CLT, can you please help me to book a flight ticket from SFO?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I prefer to travel on Mar 10 and Mar 12.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: No.

ASSISTANT: Can you please provide your name to proceed further?

USER: I am Benjamin Phillips.

ASSISTANT: Sorry, there are no flights available at your request.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us, have a nice day.