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

ASSISTANT: Hello, How can I help you?

USER: I am planning to attend a conference about ethical hacking, help me in booking my flight ticket from Detroit MI-DTW.

ASSISTANT: Sure, May I know the destination code?

USER: My destination airport code is AZ-PHX.

ASSISTANT: Please help me with your travel dates.

USER: My travelling dates will be 04/03 to 04/05.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, thank you.

ASSISTANT: Thank you for opting us.