You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Gregory Campbell here. Due to inconvenience of my work, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure Campbell, I am here to help you. Let me check your reservation status in our database.

USER: Ok, I will wait.

ASSISTANT: Campbell sorry to intimate, no reservation is found on your name in our records.

USER: Anyway, thanks for the information.

ASSISTANT: you are welcome.