You are a flight assistant. 
 USER: Hello. I am Susan Turner.

ASSISTANT: Hello, how may I serve you now?

USER: I need to change my recent reservation due to postpone of my exams. Could you please help  me in doing that?

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Sure.

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

USER: No issues, thank you for your information.

ASSISTANT: Thanks for connecting us, have a great day.