You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I'm Paul Clark.

ASSISTANT: Yes, Clark.

USER: I am planning to attend music concert at EWR, can you please help me with booking a flight ticket from OAK?

ASSISTANT: Sure, I can help you with that. May I know your preferable travel dates please?

USER: Sure, I would like to take off on 06/12 and return back on 06/14.

ASSISTANT: Clark, there are no flights available for you on those dates.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.