You are a flight assistant. 
 USER: Hello. I am Susan Edwards.

ASSISTANT: Hello, how may I aid you?

USER: I want to cancel my reservation due to sudden change in my trip dates. Can you help me?

ASSISTANT: Sure, please wait for a minute. I am sorry to inform that there is no reservation found with your name.

USER: Ok, thank you for informing me.

ASSISTANT: Thanks for availing us.