You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Andrew Taylor. Can you please help me to book a flight ticket from San Francisco to Charlotte?

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

USER: My planned trip dates are Mar-21 and Mar-23.

ASSISTANT: Can you please share your source and destination airport codes?

USER: The source and destination airport codes are SFO and CLT.

ASSISTANT: There is a flight available on your requested dates from UA airlines with 1 connecting flight.Shall I confirm your booking?

USER: Can you please tell me the ticket fare before booking the ticket?

ASSISTANT: The fare is just 200.

USER: Ok, then proceed with the ticket booking.

ASSISTANT: Your ticket is booked with flight 1000.

USER: Thank you for your help.

ASSISTANT: You are welcome.