You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I need to book a flight ticket from PHL to OAK? Can you please help me?

ASSISTANT: Sure, please share me your trip dates.

USER: My trip dates will be Sep 9th to Sep 11th.

ASSISTANT: Is there any class preferences for you?

USER: No.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I am ok, with any connection.

ASSISTANT: May I know your good name?

USER: I am Nicole Jackson.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Its ok, thank you.

ASSISTANT: Thank you for opting us.