You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Debra Roberts.

ASSISTANT: How may I aid you today?

USER: I want to cancel my recent reservation due to my robotics workshop got preponed.

ASSISTANT: Ok, I can help you with cancelling your reservation. Please hold on. I will check the status.

USER: Ok.

ASSISTANT: Thanks for your patience.There was no reservation found on your name.

USER: Thank you for your response.

ASSISTANT: It's my pleasure to help you. Have a good day.