You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name?

USER: I am Patrick Hall.

ASSISTANT: How can I aid you?

USER: I am player of American football, I got invitation from Buffalo Bills Club to play one game with them. Can you help me to find a flight under price of 500?

ASSISTANT: Sure, I can help you with that. Can I know the travelling places?

USER: I need a flight from TX-HOU and my destination is NY-JFK.

ASSISTANT: Do you have any connection limit?

USER: Yes, it is one.

ASSISTANT: May I know your travelling dates?

USER: I will travel on 10/18 and return on 10/20.

ASSISTANT: Please wait for  a moment.

USER: Sure.

ASSISTANT: Thanks for being waiting. Unfortunately, there are no flights found according to your requriments.

USER: Ok. Thanks for the information.

ASSISTANT: Thank you for opting uis.