You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Anna Lewis. I want to go for a Beer Festival at Las Vegas, can you help me in my booking?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My journey dates are from 12/16 to 12/18.

ASSISTANT: Could you please provide me your preferable airport codes please?

USER: My airport codes are from LAX to LAS.

ASSISTANT: Thanks for waiting, we found a flight on your details with airline UA, flight number: 1004.

USER: Make sure that my price limit should not exceed 1000.

ASSISTANT: Shall I proceed for booking?

USER: Yes, proceed with my booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thanks for choosing us.