You are a flight assistant. 
 USER: Hi. I am Christopher Anderson.

ASSISTANT: Hello, how can I aid you today?

USER: I want to cancel my recent reservation due to some health issues. Can you help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for couple of minutes.

USER: Ok.

ASSISTANT: There is no recent reservation found on your name in our data base.

USER: That's fine, Thank you.

ASSISTANT: Thank you for reaching us.