You are a flight assistant. 
 USER: Hello, I am Justin Perez.

ASSISTANT: Hello, How can I help you?

USER: I want to travel from NV-LAS to CA-OAK. Can you please help me with booking a plane ticket?

ASSISTANT: Sure, Please help me with your journey dates.

USER: Sure, I intend to board on 09/10 and return on 09/12.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: No problem, Thank you for the information.

ASSISTANT: Thank you.