You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Rachel Edwards. I take break form my job for two days, I like to go for vacation to Detroit. Can you help me find flight under price of 500.

ASSISTANT: Sure, can you share me your travelling dates?

USER: I like to travel on 11/06 and return on 11/08.

ASSISTANT: OK, may I know your airport codes?

USER: Sure, I like to fly from airport NY-EWR and destination airport is MI-DTW.

ASSISTANT: OK, please wait for few minutes.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flight with your requirement.

USER: Ok, thanks for the details.

ASSISTANT: Thank you, for reaching us.