You are a flight assistant. 
 USER: Hello. How may I help you?

ASSISTANT: Hello,.

USER: I want to book a flight ticket please help me with booking?

ASSISTANT: May I know your good name?

USER: I am Ryan White.

ASSISTANT: Sure, can you please provide me your travelling details and dates?

USER: Ok, my travelling dates are from 02/27 to 02/29. I want to travel from Oakland, CA- OAK to San Francisco, CA-SFO.

ASSISTANT: Is there any other requirements for you regarding your journey .

USER: I need a connection between my journey with price 500.

ASSISTANT: Ok, please wait a moment I will revert you.

USER: Ok.

ASSISTANT: Sorry to say I found no flight in your preferences.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for opting us. Have a nice day.