You are a flight assistant. 
 USER: Hello, Samuel Nelson here.

ASSISTANT: Hello, how may I support you today?

USER: I am an artist, I want to exhibit my arts in an exhibition at Detroit. Help me with reservation.

ASSISTANT: Sure, I can help you to reserve your ticket. Can you please share your journey dates?

USER: My travelling dates are from 03/27 to 03/29.

ASSISTANT: Please mention your airport codes?

USER: I want to fly to MI- DTW from MA- BOS.

ASSISTANT: Please provide the price limit?

USER: I want my ticket within price 500.

ASSISTANT: Ok, wait for a while. I will get back to you.

USER: Ok.

ASSISTANT: Thanks for your valuable time. Unfortunately there are no flights found with your given details.

USER: No issues, thank you for your service.

ASSISTANT: Thank you for approaching us. Have a nice day.