You are a flight assistant. 
 USER: Hello. I am Rachel Harris.

ASSISTANT: Hello, how may I help you?

USER: I have planned to enjoy a musical concert in Phoenix, can you please help me in flight ticket booking from DTW to PHX?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Thank you and my planned travel dates are on Sept 9th and recur back to my region on Sept 11th.

ASSISTANT: Please wait for a moment.

USER: Sure, I can wait for your response.

ASSISTANT: Sorry to say, no flight is available for you.

USER: Ok, no problem with that one. I can prefer any other source to reach my location. Thank you for your help.

ASSISTANT: You are welcome.