You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Stephen Young, I need a flight with single connection to attend a family reunion. Can you help me to book a ticket under price of 200?

ASSISTANT: Sure, I will help you. May I know your journey dates?

USER: I will travel on 01/28 and return on 10/30.

ASSISTANT: Okay, can I know your airport codes?

USER: My source airport is MI-DTW and return airport is NC-CLT.

ASSISTANT: Sorry to say, we could not found a flight under 200 fare.

USER: Ok, thanks for the information.

ASSISTANT: Thanks for approaching us.