You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me to book a flight ticket from Minneapolis & St. Paul? Because I have to attend a Tennis competition in Las Vegas.

ASSISTANT: May I know your desired travel dates please?

USER: Thank you. My desired travel dates are Mar-17 and Mar-19.

ASSISTANT: Can I know your preferred airport codes please?

USER: The genesis and terminus airport codes are MSP and LAS.

ASSISTANT: Do you have any other specifications?

USER: Mostly, I prefer to travel in a direct flight. So, please search a flight with this requirement.

ASSISTANT: May I know your name please?

USER: My name is Kevin Jones.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: It's ok, not a problem. I will choose some other source to travel. Anyhow thank you for checking the flight availability.

ASSISTANT: Thank you for opting us.

USER: You are most welcome.