You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want cancel my recent reservation, as my health is not good to travel. Can you please help me?

ASSISTANT: On which name can I cancel your reservation.

USER: Susan Harris.

ASSISTANT: I am sorry no reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.