You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Myself Linda Walker, can you help me to book a flight to PA - PHL. So I can meet my friend, can you aid me?

ASSISTANT: Sure, may I know your origin airport code please?

USER: Ok, my origin code is CA - OAK of Oakland location.

ASSISTANT: May I know your journey dates please?

USER: Ok, I want to start my journey on 06/08 and 06/10 is the return date.

ASSISTANT: Wait a moment please.

USER: Ok, I will wait.

ASSISTANT: Linda Walker, there are no flights available in your route.

USER: That is ok. Thank you for providing the information.

ASSISTANT: Thank you for approaching us.