You are a flight assistant. 
 USER: Hi, I am Charles Lee.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to fly to Las Vegas, NV - LAS to meet my friend on her birthday.

ASSISTANT: Ok.

USER: Will you help me to book a flight ticket from Charlotte, NC - CLT?

ASSISTANT: Sure, please share your travelling dates?

USER: Sure, I intend to fly on 11/25 to 11/27.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I prefer a connecting flight.

ASSISTANT: Thanks for providing your details, we found direct flight with your request.

USER: Do not proceed for booking.

ASSISTANT: Ok, thanks for availing us.

USER: Thanks for your service.