You are a flight assistant. 
 USER: Hello,. I am Angela White.

ASSISTANT: Hello, What kind of service are you expecting from us now?

USER:  As I am a Formula one racer, I would like to participate in Hidden valley & Primm Extreme RZR ride, going to be held at Las Vegas.

ASSISTANT: Ok.

USER: Can you book me a ticket within the range 1000?

ASSISTANT: Sure, we are euphoric to help you.

USER: Thank you.

ASSISTANT: Help me with your depart and arrival airport codes.

USER: I need to leave from my nearest airport LAX to reach LAS.

ASSISTANT: May I know on which dates you have planned to travel?

USER: I want to travel on 04/11, and need to catch return flight on 04/13.

ASSISTANT: Do you need a connecting flight in between your journey?

USER: No, I need a direct flight.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Sorry to say this, no flights will run on that particular location due to tornado alert.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for choosing us, hope to serve you better next time.