You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I address you?

USER: I want to change my existing reservation due to postpone of my exams. Can you please aid me with this?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait for a minute, I will get back to you with current status.

USER: Sure.

ASSISTANT: May I know your good name?

USER: I am Scott Taylor.

ASSISTANT: There is no reservation found with your name in our data base to change it.

USER: That's ok, no issues. Thanks for your kind help.

ASSISTANT: Thanks for approaching us.