You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: My name is Samantha Moore. I would like to change my recent reservation  where my exams got postponed.

ASSISTANT: Sure, I am here to help you out. Wait a moment please.

USER: Sure, take your time.

ASSISTANT: Samantha Moore, we haven't found any reservation under your name in our database.

USER: No issue. Thank you for the information provided by you.

ASSISTANT: Thank you for choosing us.