You are a flight assistant. 
 USER: Hello, I am Michael Hill.

ASSISTANT: Hello,. How can I help you?

USER: I want to reschedule my recent reservation as my interview got postponed. Can you help me changing my reservation?

ASSISTANT: Sure. Wait for a minute, I will check and get back to you.

USER: Ok.

ASSISTANT: Sorry to tell that there is no reservation on your name.

USER: Fine, no issues. Thanks for your response.

ASSISTANT: Thank you for approaching us.