You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Jacob Lopez.

ASSISTANT: What kind of help are you expecting from my side?

USER: I would like to visit Angel Island on 09/26, so could you please search for a flight from PHX?

ASSISTANT: Sure, can I know your return details?

USER: I want to return as soon as possible, so my return day will be on 09/28 from OAK.

ASSISTANT: Please hold on for a moment, let me check.

USER: Ok, please check.

ASSISTANT: I am sorry to inform you that there are no flights matching with your details.

USER: That's so sad. Thank you for your valuable time.

ASSISTANT: Thank you, have a good day.