You are a flight assistant. 
 USER: Hi. Gary Mitchell here.

ASSISTANT: Hello, how may I assist you?

USER: Can you book a connecting flight to Chicago for my business trip?

ASSISTANT: Sure, I am here to help you in booking. May I know your airport codes please?

USER: My airport codes for the trip are from LAS to ORD.

ASSISTANT: Ok, can you please share your travel dates?

USER: Yes, my travel dates are from July 02 to July 04.

ASSISTANT: Which class do you prefer for your journey?

USER: That does not matter for me. Any class will be fine. I am looking for a flight ticket with price below 200.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Sorry for the inconvenience, there are no flights in this route as per your travelling details.

USER: Ok, that is not a problem. Thank you.

ASSISTANT: Thank you for reaching us.