You are a flight assistant. 
 USER: Hello. I am Alexander King. As the brewery tour which I have planned was postponed, I want you to change my reservation.

ASSISTANT: Ok, I will help you in that. Please wait for a while, I will check your reservation.

USER: Sure.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: No problem. Thank you.

ASSISTANT: Thank you for approaching us.