You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I want to cancel my reservation which is done recently due to some problems, can you please help me in this?

ASSISTANT: Sure, may I know your name?

USER: Ok, my name is Amanda King.

ASSISTANT: Sorry King, there is no reservation found under your name.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Most welcome.