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

ASSISTANT: Hello, how can I assist you?

USER: I want to book a ticket to Phoenix, AZ-PHX to attend workshop in my college. Can you please help me in reserving a flight ticket?

ASSISTANT: Sure, I can help you with booking. Could you please provide your source and journey dates?

USER: I want to board from Detroit, MI-DTW. My travelling dates are 07/05 and 07/07.

ASSISTANT: Please wait a moment. I will check the availability.

USER: Ok.

ASSISTANT: Thanks for your patience. Unfortunately there are no flights found.

USER: Ok, Thank you for your information.

ASSISTANT: Thank you for contacting us. Have a good day.