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

ASSISTANT: Hello, how can I aid you today?

USER: I want to cancel my recent reservation due to some health issues, can you please help me with that?

ASSISTANT: Sure, I will help you. Please give me a minute.

USER: Ok.

ASSISTANT: Thanks for your presence. Unfortunately, there is no reservation found on your given name.

USER: Ok, no worries at all. Thanks for your service.

ASSISTANT: Thank you for opting us.