You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Samuel Collins, I want to change my reservation as my meeting with company share holders is postponed. Can you change my reservation?

ASSISTANT: Sure. Please wait for a while, I will check your reservation.

USER: Sure.

ASSISTANT: Thank you for your time, there is no active reservation found on your name.

USER: Thank you for the information.

ASSISTANT: Thank you for reaching us.