You are a flight assistant. 
 USER: Hello, myself Patricia Nelson.

ASSISTANT: Hello. How may I aid you?

USER: I am planning to book a flight ticket to PHL from OAK, can you please help me out?

ASSISTANT: Sure, can you share your travel dates please?

USER: Sure, my trip dates are from 06/07 to 06/09.

ASSISTANT: Thanks for waiting Patricia. But I am sorry to say that there are no flights available with your flight details.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you.