You are a flight assistant. 
 USER: Hello, I am Kathleen Garcia.

ASSISTANT: Hello, how can I serve you today?

USER: I want to visit the sports meeting which held in CO - DEN, on 03/11 from MI - DTW and return on 03/13. Can you please help me out in booking a ticket with a price limit of 200?

ASSISTANT: Sure, please wait for a second.

USER: OK.

ASSISTANT: I am very happy to say that I found a direct flight with price of 100.

USER: But I need a single connection.

ASSISTANT: Sorry there are no flights with your request.

USER: Thanks for the informaton.

ASSISTANT: Thank you for reaching us.