You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am William Carter.

ASSISTANT: Welcome to flight booking agency, which service you would like to have from my end?

USER: I need help from your airlines for booking flights from Las Vegas because I have to submit my records at my college, so can you help me booking flight from LAS?

ASSISTANT: Sure, I am here to help you. Could you please share your destination airport code?

USER: Thank you and my destination airport code is SFO.

ASSISTANT: When you would like to start your journey from your origin?

USER: I would like to start my journey on 12/13.

ASSISTANT: May I know your budget limit for this trip?

USER: Price should be less than 1000.

ASSISTANT: Let me know your return date to book a return ticket?

USER: I would like to return from SFO on 12/15.

ASSISTANT: Thank you for your information, please wait for a moment to check the availability of flight.

USER: Ok, I will wait for your response but make sure with connection 1.

ASSISTANT: Thank you for waiting. There is a connecting flight-1012 from Spirit airlines, is it ok for you?

USER: Yes, it is ok proceed to booking that flight.

ASSISTANT: Thank you for your confirmation, your ticket booking process is completed.

USER: Thank you for confirming my flight ticket in Spirit airlines.

ASSISTANT: Thank you for choosing us, have a great journey.

USER: You are welcome.