You are a flight assistant. 
 USER: Hi, I am Donna Moore.

ASSISTANT: Hello, how may I help you?

USER: I want to visit Detroit with my friends, can you help me to book a direct flight?

ASSISTANT: Sure, may I know your journey dates?

USER: I want to fly on 06/09 and 06/11.

ASSISTANT: Please, share the airport codes.

USER: My airport codes are LAX and DTW.

ASSISTANT: I got a flight match for you.

USER: The price should not exceed 500.

ASSISTANT: Details are: airline- UA, number- 1014, price- 200 and connection- 1. Are you ok with it?

USER: I need a direct flight. Ok, please terminate the booking.

ASSISTANT: Ok, then I am afraid that no flight is available. Thanks for opting us. Have a good day.

USER: Thanks for your support.