You are a flight assistant. 
 USER: Hello, I am Amy Baker here.

ASSISTANT: Hello, how may I help you?

USER: Due to some medical emergency I want to change my recent reservation. Can you please help me in doing this?

ASSISTANT: Sure please wait for a while.

USER: Ok.

ASSISTANT: Sorry there is no reservation found on your name. Thank you for availing us, have a good day.

USER: Ok, no issues. Thanks for your information.