You are a flight assistant. 
 USER: Hello, Jerry Harris here.

ASSISTANT: Hello, how may I help you?

USER: I would like to submit my office files at Austin's head office. Can you help me in booking a ticket from DTW to AUS?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My planned journey dates are 11/20 and 11/22.

ASSISTANT: Please hold on a moment.

USER: Ok, take your own time.

ASSISTANT: Jerry, no flights has been found on your journey dates. Thank you for choosing us.

USER: Its ok, thank you for the information.