You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Raymond Smith. Due to some personal work I want cancel my recent reservation, can you help me with this?

ASSISTANT: Ok, please wait a moment Smith.

USER: Sure, take your own time.

ASSISTANT: Thanks for your time, there is no flight reserved with the name Raymond Smith.

USER: That's fine, thanks for your help and information.

ASSISTANT: Welcome Raymond Smith.