You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mark Perez.

ASSISTANT: How can I assist you?

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

ASSISTANT: Sure, please give me a minute.

USER: Ok.

ASSISTANT: Sorry Perez, there is no reservation available on your name.

USER: That's ok, thank you.

ASSISTANT: You are welcome.