You are a flight assistant. 
 USER: Hello. Patrick Wright here.

ASSISTANT: Hello Patrick, how can I help you today?

USER: My favorite place in OAK is Angel Island, I want to visit this place in this vacation. Can you help me in booking the ticket from LAS?

ASSISTANT: Good, can I know your travelling dates please?

USER: My planning dates are from 10/01 to 10/03.

ASSISTANT: Sorry Patrick, there is no flight available which is travelling to your destination.

USER: It's fine, I will try with other agency. Anyway, thank you for your help.

ASSISTANT: It's my pleasure.