You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to book a flight ticket from LAS to SFO?

ASSISTANT: Sure, may I know your trip dates?

USER: My travelling dates are 31 Dec and 02 Jan.

ASSISTANT: Do you have any other requirements?

USER: I prefer to travel in economy class with a connecting flight.

ASSISTANT: Can I know your name please?

USER: I am Brian Martinez.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting and we have found a flight in economy class with 1 connection in Spirit airlines and the fare of your flight will be 200. Do you like me to proceed your booking with this flight?

USER: Please proceed.

ASSISTANT: Ok, your ticket is booked.

USER: Thanks for helping me.

ASSISTANT: Most welcome.