You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Rebecca Edwards. Can you help me, for flight ticket booking on these dates from 06/08 to 06/10?

ASSISTANT: Sure Rebecca, can I know the travelling codes please?

USER: I am looking for a flight to travel from OAK to EWR.

ASSISTANT: Ok, wait a moment please.

USER: Ok.

ASSISTANT: Sorry to inform you that there are no flights as per your request.

USER: It's ok, no problem.

ASSISTANT: Thank you for approaching us, have a great day.

USER: Thank you for your service.