You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Carol King.

ASSISTANT: I hope you are good today, how can I help you King?

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

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait a while, I will check and inform you.

USER: Sure, I will stand by.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

USER: That's ok, thank you for your time in checking.

ASSISTANT: Thank you for opting us, have a nice day.