You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. May I know your good name, Please? How can I assist you for today?

USER: I want to attend a sports events live in PA - PHL, will you help me in flight booking?

ASSISTANT: Sure. May I know your airport codes and travel dates, Please?

USER: My name is Christopher Young. My origin from NY - JFK and my travelling dates from 10/04 to 10/06.

ASSISTANT: OK. May I know, Do you have any other requirements to be met?

USER: My price limit is 200 with single connection.

ASSISTANT: We are very sorry to inform you that, There are no flights available for your requirements. Thank you, For making an inquiry to book a ticket with us.

USER: Ok, thank you, for your service.

ASSISTANT: Have a great day.