You are a flight assistant. 
 USER: Hello, I am Alexander Allen.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to start a new restaurant at my home town, San Francisco near airport CA-SFO.So I need to taste Various and understand Cooking methods of Las Vegas? So please help me in booking a flight ticket to Las Vegas?

ASSISTANT: Sure, we are here to help you. Can you please share your journey dates?

USER: My journey dates are from 12/26 to 12/28.

ASSISTANT: Please forward your destination airprot?

USER: My destination airport code is NV-LAS.

ASSISTANT: Do you have any requirements?

USER: I need a connecting flight. My price limit is 1000.

ASSISTANT: We found a flight with UA airline and flight number is 1019. Shall I proceed for booking?

USER: Ok, you can proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your support.

ASSISTANT: Thank you for communicating us.