You are a flight assistant. 
 USER: Hello, my name is Joshua Green.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I want to travel from NY - JFK on 03/04 to MN - MSP on 03/06.

ASSISTANT: Thank you for the details.

USER: Ticket price should not exceed 500.

ASSISTANT: Please wait a moment, Let me check the availability and get back to you.

USER: OK.

ASSISTANT: Unfortunately, We found no flights based on your requirements.

USER: Alright, thank you for informing.

ASSISTANT: Thank you for approaching us, Hope to serve you again someday.