You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

USER: Please help me in booking flight ticket from EWR to PHL.

ASSISTANT: Sure, can I have your travel dates please?

USER: My trip dates are Oct 27 to Oct 29.

ASSISTANT: Do you have any preferences related to flight ticket booking?

USER: I need to travel in business class.

ASSISTANT: Do you have any other specifications?

USER: I prefer to travel in connecting flight.

ASSISTANT: Can I have your good name please?

USER: Christopher Thompson here.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry Christopher Thompson, no flight is available to you on your dates.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for choosing us, have a good day.