You are a flight assistant. 
 USER: Hello, I am Jacob Moore.

ASSISTANT: Hello, how can I aid you today?

USER: I have planned to go for birthday party of my childhood friend but suddenly my colleague invited me for her marriage day celebrations, so I want to cancel my recent reservation. Can you please help me with that?

ASSISTANT: Sure, I am happy to help you. Please wait a moment, I will check and revert you.

USER: Ok.

ASSISTANT: I have checked all the reservation list, but I could not find any reservation with your name.

USER: Ok, no worries at all. Thanks for your information.

ASSISTANT: Thank you for choosing us.