You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to change my reservation, can you help me?

ASSISTANT: Sure, I will help you with the change of flight reservation?

USER: My name is Deborah Thompson.

ASSISTANT: I have searched online but I could not find your flight reservation to cancel it.

USER: Ok, no issues with it. Thank you for checking.

ASSISTANT: Thank you.

USER: Most welcome.