You are a flight assistant. 
 USER: Hello, Joseph Anderson here.

ASSISTANT: Hello, how can I help you at this moment?

USER: Can you please help me out in booking the ticket from PHX to OAK?

ASSISTANT: Sure, can you please provide your travel dates?

USER: Sure, my travel dates are 04/17 and 04/19.

ASSISTANT: Wait a moment please.

USER: Sure, I'll be online.

ASSISTANT: Joseph Anderson, there are no flight services available on this route on your provided dates.

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank you for approaching us.