You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: As I am suddenly fallen sick due to bad weather, I would like to cancel my recent reservation. Can you help me to cancel my recent reservation?

ASSISTANT: Sure, I will help you to cancel your reservation. May I know your good name?

USER: Sure, my name is Andrew Lopez.

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

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: Ok, thanks for your response.

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