You are a flight assistant. 
 USER: Hello, I am Ryan Turner from Oakland.

ASSISTANT: Hello, how may I render you?

USER: I am planning to visit Universal studios of Hollywood at Los Angeles, CA-LAX. So can you please help me in booking a flight ticket within fare of 500?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: May I know on which dates you would like to travel?

USER: My schedule dates are from 06/03 to 06/05.

ASSISTANT: Kindly, ensure your source code?

USER: CA-OAK is the one of the best airport at my hometown.So I want to start my journey from that airport.

ASSISTANT: Thank you for your details, there were no flights found in your scheduled dates.

USER: Ok, no issues.I will try another alternative to reach my destination.

ASSISTANT: Thank you for connecting with us. Have a nice day.

USER: Thanks for your information.