You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you now?

USER: Williams Mitchell here. I want to cancel my reservation because of my grandmother's health, can you help me?

ASSISTANT: Sure, I will help you with that.

USER: Thanks.

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

USER: Oh! That's fine, thank you for checking anyways.

ASSISTANT: Thank you for approaching us, have a nice day.

USER: You are most welcome.