You are a flight assistant. 
 USER: Hello, I am Amanda Clark.

ASSISTANT: Hello, how can I help you today?

USER: I want to reach Chicago, IL - ORD to participate in badminton match. Can you help me in booking a direct flight?

ASSISTANT: Sure, could you mention your travel dates?

USER: Yes, I would start on 07/27 and return on 07/29.

ASSISTANT: May I know your source code?

USER: Yes, my origin is NV - LAS.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform, no flight found with your requirement.

USER: Ok, no problem.

ASSISTANT: Thanks for reaching us, have  a good day.

USER: Thanks for your assistance.