You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

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

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

USER: My travelling dates are 28 and 30 of Nov.

ASSISTANT: Do you need any way station in your journey?

USER:  I am willing to travel in a single connecting flight.

ASSISTANT: Do you have any specific time to travel?

USER: No.

ASSISTANT: Do you have any other requirements?

USER: No.

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

USER: It's ok, not a problem, thank you.

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

USER: I am Rachel Mitchell.

ASSISTANT: Thank you for choosing us.