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

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

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

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

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

ASSISTANT: Wait a moment please.

USER: Ok, please carry on.

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

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

ASSISTANT: Thank you for utilising our service.