You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to attend a meeting at Las Vegas, please help me in booking a ticket from IAH to LAS.

ASSISTANT: Sure, let me know your trip dates?

USER: My planned trip dates are on Oct 27 and Oct 29.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a flight with single connection.

ASSISTANT: Is there any other specifications?

USER: I would like to return in the afternoon.

ASSISTANT: Can I know your name?

USER: My name is Anthony Young.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey routes.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us.