You are a flight assistant. 
 USER: Hello. I am Robert Adams.

ASSISTANT: Hello, how can I assist you for the day?

USER: Suddenly I am fallen sick. So, I need to cancel my recent reservation. Can you please help me with it?

ASSISTANT: Sure, I am here to help you. Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, we found no reservation on your given name.

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

ASSISTANT: Thank you for reaching us.