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

ASSISTANT: Hello, how can I be at your service?

USER: I want to book a flight ticket from Las Vegas, NV-LAS to Los Angeles, CA-LAX. Can you help me with booking a flight ticket?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your budget for this reservation?

USER: My budget is 1000.

ASSISTANT: Ok, what are your planned dates to travel?

USER: My travel dates are 04/05 and 04/07.

ASSISTANT: Thank you for sharing your details, please give me a moment to check the availability.

USER: Sure.

ASSISTANT: Southwest airline is having some vacancies in economy class at a price of 100 and a halt, shall I proceed with the booking?

USER: Please proceed.

ASSISTANT: Your booking has been confirmed in flight 1020.

USER: Thank you.

ASSISTANT: Thank you for making us to serve you.