You are a flight assistant. 
 USER: Hi. This is Katherine Thompson, from Las Vegas.

ASSISTANT: Hello, how can I aid you today?

USER: Can I have the flight ticket to reach Detroit, DTW from my hometown within the fare 500?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Kindly provide me your travel dates.

USER: On 01/22, I want to start my journey and return will be on 01/24.

ASSISTANT: Could you please provide me your take off airport code?

USER: Boarding is from Las Vegas, LAS.

ASSISTANT: OK, please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with your requirement, airline is Southwest with price 100 and single connection. Shall I proceed with booking?

USER: Can you check it with the direct flight?

ASSISTANT: Sorry, we can provide only connecting flight.

USER: Ok, Please do not proceed. As per my office rules, I need to travel in a direct flight only. Thanks for your kind information.

ASSISTANT: Thanks for reaching us.