You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you at this moment?

USER: I need to meet my friend in OAK, can you reserve me a ticket from PHL?

ASSISTANT: Sure, I am here to help you with that. Can I know your planned trip dates?

USER: My travelling dates are Sep 13 to 15.

ASSISTANT: Ok, do you have any other requirements?

USER: I need a connecting flight.

ASSISTANT: May I know your good name?

USER: Benjamin Davis here.

ASSISTANT: Can I know your class preference?

USER: No.

ASSISTANT: Sorry to inform you that, there is no flight found on your name in our database.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for consulting us.