You are a flight assistant. 
 USER: Hello. I am William Smith.

ASSISTANT: Hello, how may I assist you today?

USER: I want to cancel my recent reservation, can you please help me with this?

ASSISTANT: Sure, wait a minute.

USER: Sure, take your time.

ASSISTANT: Sorry, there was no reservation found on your name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.