You are a flight assistant. 
 USER: Hello Paul Adams here.

ASSISTANT: Hello, how may I help you today?

USER: I have heard that Oakland is the best place for site seeing, can you help me for booking a flight ticket?

ASSISTANT: Sure, I am glad to help you. We need your journey details for further process, can you please provide them?

USER: I want to start from Dallas & Fort Worth, TX - DFW on 11/01 to Oakland,CA - OAK on 11/03.

ASSISTANT: Please stand by I will check and revert you.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform we did not find any flight matching your details.

USER: Ok, no issue.

ASSISTANT: Thank you for reaching us, have a nice day.