You are a flight assistant. 
 USER: Hello, Gregory Lewis here.

ASSISTANT: Hello, how may I amend you today?

USER: I want to book a flight ticket to Las Vegas, CA - LAX as I need to submit my research record. Can you please book a ticket on 02/10?

ASSISTANT: Sure, we are happy to help you for booking. Let me know when do you want to return?

USER: I want to return on 02/12.

ASSISTANT: Ok, may I know your source point.

USER: My origin is Orlando, FL - MCO.

ASSISTANT: Ok, can you please assign your budget?

USER: My price limit is 200.

ASSISTANT: Ok, please be on hold.

USER: Ok.

ASSISTANT: Thanks for being hold. Sorry to say that, there were no flight running at that location due to abnormal weather conditions.

USER: Ok, I will choose another alternative. Thank you.

ASSISTANT: Thank you for approaching our service.