You are a flight assistant. 
 USER: Hello, I am Jason Young.

ASSISTANT: Hello, how can I best serve you?

USER: I need a direct light to meet my cousin who is staying at Detroit, DTW.Can you please book a flight ticket for me?

ASSISTANT: Sure, mention your travelling dates?

USER: My travelling dates are 04/14 to 04/16.

ASSISTANT: Is there any fare limit?

USER: Yes, my price limit is 1000.

ASSISTANT: May I know your departure airport code?

USER: Seattle, SEA is my origin point.

ASSISTANT: Sorry, no flights were found with your given details.

USER: It's ok, no problem.

ASSISTANT: Thanks for availing us, hope to serve you again.

USER: Thank you for the information.