You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you today?

USER: I would like to attend a cultural event which is going to be conduct at  Oakland, CA-OAK ON 06/03. I need your help in booking a ticket.

ASSISTANT: Sure, Let me know your origin point and travelling dates?

USER: My origin is NV-LAS and I have to return on 06/05.

ASSISTANT: Ok, wait for a while. May I know your name?

USER: My name is Scott Hernandez.

ASSISTANT: Thank you for being patience. Unfortunately, We could not find any flight that matches your data. Thank you for reaching us.

USER: Ok, Thanks for your information.