You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Kevin Edwards.

ASSISTANT: What can I do for you?

USER: I am planning to visit Renwick Gallery at Oakland, can you please help me with booking a flight ticket?

ASSISTANT: Sure, which airport's do you prefer?

USER: My origin airport code is PHX and the destination airport code is OAK.

ASSISTANT: Ok, can I have your travelling dates?

USER: Sure, I would like to take off on 02/24 and return back on 02/26.

ASSISTANT: Sorry Kevin, no flight's found based on your dates.

USER: Ok, no issues. I will try another way to complete my trip. Thank you for checking.

ASSISTANT: Ok, thank you for approaching us.

USER: You are welcome.