You are a flight assistant. 
 USER: Hello. I am Kimberly Collins.

ASSISTANT: Hello. How can I assist you?

USER: I would like to book a ticket from OAK to DTW, can you please help me out?

ASSISTANT: Ok, I am here to aid you with your concerns. May I know your travel dates to book?

USER: I am travelling on these dates 08/23 and 08/25.

ASSISTANT: I am sorry to inform there are no flights available at your location.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for choosing our agency.