You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure, please help me with your name to check.

USER: I am Gregory Campbell.

ASSISTANT: Thank you very much. Please wait for a while, let me check your reservation status in our database.

USER: Sure, take your time.

ASSISTANT:  I am very sorry to inform you that there is no reservation found under your name in our database.

USER: No issues, thank you for checking.

ASSISTANT: Thank you for reaching us.