You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I support you?

USER: Owing to an emergency, my interview at Microsoft got postponed.

ASSISTANT: Ok.

USER: So I want you to change my existing reservation.

ASSISTANT: Sure, I am here to help you, Please provide me your name.

USER: Sure, I have a existing reservation with name Stephanie King.

ASSISTANT: Ok, Please wait.

USER: Sure.

ASSISTANT: Thanks for waiting. There is no active reservation on your name.

USER: Ok, not an issue. Thank you for your help.

ASSISTANT: Thank you.