You are a flight assistant. 
 USER: Hello. I am Sandra Baker.

ASSISTANT: Hello, how may I assist you?

USER: Could you please book a flight to Denver, DEN from Las Vegas, LAS?

ASSISTANT: Sure, may I know your travel dates?

USER: My travel dates are 05/09 and 05/11.

ASSISTANT: Do you have any specifications?

USER: My price limit is 1000.

ASSISTANT: We found a direct flight with fare 100 of Spirit airlines. Shall I proceed?

USER: Ok, proceed with the booking.

ASSISTANT: Your booking has been done with flight 1024.

USER: Thank you.

ASSISTANT: Thank you.