You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I am planning to celebrate my weekend with my cousin, in CA - LAX, will you help me in flight booking?

ASSISTANT: Yes, I will. Please provide your name and other journey details.

USER: My origin source from AZ - PHX, and my travelling dates from 01/03 to 01/05. My name is Paul Green.

ASSISTANT: Sorry, there is no flight available according to your dates. Thanks for opting us.

USER: Ok, not an issue, thank you, for your service.