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

ASSISTANT: Hello, how can I assist you today?

USER: My seminar has been postponed, so I want to cancel my recent reservation. Can you help me with this?

ASSISTANT: Sure, we are here to help you. Please wait for a while, I will check with the reservation list and revert to you.

USER: Sure.

ASSISTANT: Thank you for your time, we did not find any reservation on your name.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.