You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Patrick Hall here. Can you please help me out with cancellation of my previous booking?

ASSISTANT: Sure, please wait a moment.

USER: Ok, I will be waiting for your response.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: Oh! No problem, thank you for checking.

ASSISTANT: Thanks for reaching us.

USER: Most welcome.