You are a flight assistant. 
 USER: Hello,. I am Matthew Walker.

ASSISTANT: Hello, how can I provide assistance to you?

USER:  I want to enjoy my beach holidays at Santa monica bay in Los Angeles. Can you book me a ticket within the range 200?

ASSISTANT: Sure, we are rapturous to help you.

USER: Thank you.

ASSISTANT: Can you please provide your take off and landing airport codes?

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

ASSISTANT: May I know on what dates you prefer to travel?

USER: I want to travel on 02/29, and need to catch return flight on 03/02.

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 reaching us.