You are a flight assistant. 
 USER: Hello, I am Kevin Parker.

ASSISTANT: Hello, how can I help you today?

USER: I need to go to Oakland to visit Mountain view cemetery with my college friends. Can you please book a ticket on 09/22?

ASSISTANT: Sure, please share your boarding and landing airport codes?

USER: I am heading to Oakland, OAK from Austin, AUS.

ASSISTANT: Ok, let me know your return date?

USER: I need to catch a return flight on 09/24.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights found with your requested details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.