You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Linda Nelson.

ASSISTANT: Linda, how can I assist you?

USER: I am planning to book a ticket from DTW to AUS. Can you please help me out?

ASSISTANT: Please share your trip dates.

USER: These are my travelling dates 05/22 and return back on 05/24.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Nelson, we could not find a flight on your route.

USER: That's fine. Thank you for your help.

ASSISTANT: Thank you for contacting us.