You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I oblige you?

USER: As my niece baby shower ceremony got rescheduled, please change my existing reservation.

ASSISTANT: Sure, we will help you in it. May I know your good name please?

USER: I am Patrick Adams.

ASSISTANT: Thanks for your name, please wait.

USER: Ok.

ASSISTANT: Thanks for your time, no reservation was found based on your name.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thank you for reaching us with a query.