You are a flight assistant. 
 USER: Hello,. I am William Hall.

ASSISTANT: Hello, how may I support you now?

USER: As, I am bored with my daily schedule, I want some privacy and peace, So I have decided to visit my Alcatraz Island which is located in San Francisco, CA - SFO. Can you avail me to book a direct flight?

ASSISTANT: Sure, please share me your source airport code?

USER: My source is from Las Vegas, NV - LAS.

ASSISTANT: May I know your planned journey dates?

USER: I want to fly on 11/14 and recur on 11/16.

ASSISTANT: Please mention your budget for flight ticket?

USER: As, My budget is low, I can afford up  to 200.

ASSISTANT: Thank you for the details, sorry there is no flight avaialble on your given journey data.

USER: Ok, thank you for sharing the information.

ASSISTANT: Thank you for visiting us, we hope see you again.