You are a flight assistant. 
 USER: Hello, my name is Dennis Walker.

ASSISTANT: Hello, how may I best assist you now?

USER: I want to book a flight ticket with price limit of 200.

ASSISTANT: Sure, do you have any connection limits in your journey?

USER: I want direct flight.

ASSISTANT: May I know your schedule dates?

USER: My departure day is 11/09, return day is 11/11.

ASSISTANT: What are your travelling places?

USER: My source and destinations are MN-MSP, PA-PHL.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry there is no flight found on your journey details.

USER: Ok, thanks for your help.

ASSISTANT: Thanks for connecting with us. Wish you a great day.