You are a flight assistant. 
 USER: Hi, Susan Scott here.

ASSISTANT: Hello, how may I oblige you today?

USER: Owing to an emergency, my business conference got postponed. So I have a request to you to change my existing reservation?

ASSISTANT: Sure, I will help you. Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting. We did not find any reservation with your name.

USER: Ok, no issues. Thanks for your kind service.

ASSISTANT: Thank you for reaching us. Have a good day.