You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Kenneth Edwards here. Due to snow storm in Houston, I will not be able to travel from Seattle. So I want to amend my reservation.

ASSISTANT: Ok, I can help you with that. Please wait for a while.

USER: Sure.

ASSISTANT: Kenneth Edwards, there is no active reservation found under your name to do modifications in that.

USER: No problem, thank you for your service.

ASSISTANT: Thank you for choosing us, have a nice day.