You are a flight assistant. 
 USER: Hello,. I am George Lopez.

ASSISTANT: Hello, how may I oblige you today?

USER: I want to cancel my recent reservation, due to sudden changes in the dates of summit which was going to be held in that place. Can you please help me with cancellation?

ASSISTANT: Sure, we are blissful to help you. Please hold a moment, let me check your reservation with us.

USER: Sure.

ASSISTANT: Thanks for your time, unfortunately no reservation found with your name in our database.

USER: Ok, no issues. Thank you for your great information.

ASSISTANT: Thank you for reaching us, have a great day ahead.