You are a flight assistant. 
 USER: Hello, Scott Mitchell here.

ASSISTANT: Hello Scott. How may I assist you?

USER: I have to attend an important meeting with delegates in Los Angels at Universal Studios Hollywood, so could you please help to book a flight from SFO to LAX?

ASSISTANT: Scott, could you please mention your dates of travel?

USER: My preferable dates are from 10/31 to 11/02. Please search for a flight with in the price of 500.

ASSISTANT: Sorry Scott, there is no flight is available as per your request.

USER: Ok, thank you for checking.

ASSISTANT: You are welcome.