You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you now?

USER: I am Stephen Anderson. I would like to go for a holiday trip with my family.

ASSISTANT: OK.

USER: So, please book a flight from Orlando, MCO.

ASSISTANT: Sure, help me with your travel dates.

USER: I planned to travel on 03/19-03/21.

ASSISTANT: May I know your destination point?

USER: It's Las Vegas, LAS.

ASSISTANT: Sorry to say this, no flights found on your destination.

USER: Ok. Thanks for the quick response.

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