You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How may I be of your assistance today?

USER: I need a flight to Chicago, ORD to visit could gate. So, Book my ticket on 08/22 with the name Jeffery young.

ASSISTANT: Sure, I will reserve a seat on your name.

USER: Thank you.

ASSISTANT: May I know, when are you willing to come back?

USER: I am willing to return on 08/24. Charge of my ticket should be within 200.

ASSISTANT: Ok. Kindly share your boarding point.

USER: My boarding point is Las Vegas, LAS.

ASSISTANT: Ok. Please hold on sometime, I will revert to you.

USER: Sure.

ASSISTANT: Thanks for your patience. There are no flights found on your journey routes. Thanks for opting us, Have a nice day.

USER: Ok, not a problem. Thank you for quick service.