You are a flight assistant. 
 USER: Hi. I am Joseph King.

ASSISTANT: Hello, how may I help you today?

USER: I want to cancel my recent reservation, due to health issue. Can you help me in my cancellation?

ASSISTANT: Sure, I will help you with cancellation.

USER: Thank you.

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

USER: Sure, I will wait for your response.

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

USER: Not an issue. Thank you for your kind information.

ASSISTANT: Thank you for visiting us, we hope see you again.