You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

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

ASSISTANT: Sure, I can help you out. Can I know your travelling dates?

USER: My planned dates are on Oct 22nd to 24th.

ASSISTANT: Do you require  any break?

USER: Yes, I need a direct flight.

ASSISTANT: Is there any comforts?

USER: I need a flight in business class.

ASSISTANT: May I know your name?

USER: Sure, my name is Nicole Roberts.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: Not a problem, thank you.

ASSISTANT: Thank you for reaching us.