You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Brian Scott. I am planning to visit ATL to meet my friend, can you please find a flight from OAK?

ASSISTANT: Sure, I will help you to book a flight, can you please share me your travelling dates?

USER: My planning dates are from 01/22 till 01/24.

ASSISTANT: Sorry, no flight is available on your route.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day.