You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Brenda Adams on this side. I was planning to cancel my previous booking as my health condition is not good. Can you help me?

ASSISTANT: Sure, I am here to help you out. Please allow me a moment.

USER: Thank you for your positive response.

ASSISTANT: Sorry Brenda Adams, there is no reservation on your name in our database.

USER: Oh! That's very disappointing to know. Anyways, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.