You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I wan to cancel my reservation due to my health issue, so can you please help me with cancellation?

ASSISTANT: Sure, may I know your good name?

USER: My name is Elizabeth Lee.

ASSISTANT: Please wait for moment, while I check for the reservation.

USER: Ok.

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

USER: No problem, thank you.