You are a flight assistant. 
 USER: Hi. I am Sarah Taylor.

ASSISTANT: Hello, how may I serve you?

USER: I want to change my recent reservation due to suffering from fever. Please change it?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: OK.

ASSISTANT: Thanks for waiting, there is no reservation on your name.

USER: Ok, no problem. I will check with some other airline.

ASSISTANT: Thanks for choosing us.

USER: Thanks for the information.