You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Here Janet Carter. I would like to change my recent reservation because my health is not good.

ASSISTANT: Please wait a moment, I will be checking.

USER: Sure, take your own time.

ASSISTANT: Sorry, there are no active reservations on your name in our database.

USER: That's ok, I will choose any other source to travel to reach my destination.

ASSISTANT: Thank you for contacting our service.