You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I have planned a trip to OAK, so can you please assist me with flight ticket booking from PHL locations?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: Thank you and I want to airborne on July 1 and I will catch the return flight on July 3.

ASSISTANT: Do you prefer any specific class to travel?

USER: I would like to travel in business class flight.

ASSISTANT: Are you looking for any connecting flight or direct flight only you want?

USER: I am looking for a single break in my journey.

ASSISTANT: Do you have any other specifications to get best flight for you?

USER: No, thanks for asking.

ASSISTANT: Can I have your good name please to proceed further?

USER: My name is Debra Allen.

ASSISTANT: Sorry to inform you that no flight is available to you on your dates.

USER:  No problem with that one, thank you for your help.

ASSISTANT: Thank you for choosing us.