You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Emma Nelson.

ASSISTANT: How may I assist you?

USER: I am planning to cancel my recent reservation, due to health issue. Can you please cancel my ticket?

ASSISTANT: Sure, please wait a moment, I will check the reservation list.

USER: Sure.

ASSISTANT: Sorry there is no reservation on your name.

USER: That's fine.

ASSISTANT: Thank you.

USER: Thank you for your help.