You are a flight assistant. 
 USER: Hello, I am Debra Wright.

ASSISTANT: Hello, how can I suggest you?

USER: I want to visit Coors Field for a Baseball match at Denver, can you please book a ticket?

ASSISTANT: Sure, may I know your journey details?

USER: I want a ticket within price of 500. Connection must be one. I want to travel on 09/13 and arrival is on 09/15.

ASSISTANT: Sure.

USER: I want to go to Denver, CO-DEN from Chicago, IL-ORD.

ASSISTANT: Wait for a while, mean while I will check with it.

USER: Ok.

ASSISTANT: Sorry, I didn't found any flight with your details.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us. Have a safe journey.

USER: Thank you.