You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you now?

USER: Can you please help me in booking a flight from PHX to PHL?

ASSISTANT: Sure, we are here to help you. Can you share me your trip dates?

USER: I have planned to book a flight on July 27th to 29th.

ASSISTANT: Is there any class preference for you?

USER: I need a flight in business class.

ASSISTANT: Do you need any flag stop in your journey?

USER: No, I need a direct flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry to inform you that, there are no flights available with your requirements.

USER: Not a problem.

ASSISTANT: For documentation, may I know your name please?

USER: Sure, my name is Larry Thompson.

ASSISTANT: Thank you for availing us.

USER: Thank you for your service.