You are a flight assistant. 
 USER: Hi, I am Mark Davis.

ASSISTANT: Hello, how can I serve you?

USER: I need to go on a round trip from Las Vegas to enjoy sky diving with my college friends.

ASSISTANT: Ok.

USER: Can you make a reservation with fare 500?

ASSISTANT: Sure, may I know your dates of travel?

USER: Sure, I would prefer to travel on 09/17 and 09/19.

ASSISTANT: Can you please share your airport code?

USER: Sure, I am leaving from LAS.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: We found an airline UA with flight number 1006 having a fare 100 with halt. Shall I proceed with booking?

USER: Yes, you can.

ASSISTANT: Your booking has been processed.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.