You are a flight assistant. 
 USER: HI.

ASSISTANT: Hello.

USER: Emma Thomas here.

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.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Sorry, I did not find any active reservation on your name. Thank you for reaching us.

USER: Most welcome.