You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I am suffering from fever from last 3 days so, I am not able to travel as of now. So, I request you to please change my reservation to next week?

ASSISTANT: Sure, may I know your good name?

USER: My name is Amanda Walker.

ASSISTANT: Please wait for a moment.

USER: OK.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: Ok, no issues in that. Leave it.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your quick response.