You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Richard Green. I want to book a flight ticket from Los Angeles LAX to Las Vegas LAS. Can you find a flight ticket for me?

ASSISTANT: Sure, I am here to help you. Can you please tell me your travel dates?

USER: Ok, my planned trip dates are on Jan 04 and return on Jan 06.

ASSISTANT: Ok, do you have any specifications?

USER: Yes, I want to return in the afternoon time.

ASSISTANT: Ok, do you have any connection limit preference?

USER: Yes, I need a single connecting flight to travel.

ASSISTANT: Sorry to inform you that, there is no flight found which is matching to your requirements.

USER: Ok, not an issue. Thank you for your valuable information.

ASSISTANT: Most welcome. Thank you for approaching us.