You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, firstly can I please know your name?

USER: Sure, I am Dorothy Hill.

ASSISTANT: Yes, Dorothy Hill what can I serve you for today?

USER: I have booked a ticket last week to participate in a dance competition but that has cancelled suddenly. Can you please help me to cancel my reservation?

ASSISTANT: Oh! so sad.I will help you to cancel it but please give me a moment to check the existing reservation on your name. Yes, Hill I do not find any reservation under your name to cancel.

USER: That's ok. Thank you for your information.

ASSISTANT: Thank you for contacting our services, hope you have a great day ahead.