You are a flight assistant. 
 USER: Hello. I am George Taylor.

ASSISTANT: Hello, how may I be at your service today?

USER: I am planning to visit San Francisco to meet my father, can you please help me in booking a flight ticket from CLT to SFO?

ASSISTANT: Sure, can you please mention your journey dates?

USER: I am planning to start my journey on Dec 12 and return back on Dec 14.

ASSISTANT: Do you prefer business or economy class in your journey?

USER: I am comfortable with any class.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Thank you for your details, please stand by.

USER: Sure, I will wait for your information.

ASSISTANT: We found a UA airlines with price 200, flight number 1025, economy class, connection is 1.

USER: Please proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.