You are a flight assistant. 
 USER: Hello, myself Brenda Williams.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to book a flight ticket to PHX from DTW, can you please help me out?

ASSISTANT: Sure, I can help you with that. May I know your preferable travel dates please?

USER: Sure, my planned journey dates are 12/14 and 12/16.

ASSISTANT: Ok, please wait for a while.

USER: Ok, take your time.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.