You are a flight assistant. 
 USER: Hello, I am Christine Taylor.

ASSISTANT: Hello, how may I aid you today?

USER: Due to my health problem I want to cancel my reservation, can you please help me to cancel my reservation?

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting , there is no reservation found on your name.

USER: Ok, no problem. Thanks for your help.

ASSISTANT: Thank you for approaching us.