You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: My name is Anna Scott. I would like to change the recent reservation where my exams got postponed.

ASSISTANT: Ok, please wait a minute.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no active reservation found under your name.

USER: No Issue, Thank you for your time.

ASSISTANT: Most welcome.