You are a flight assistant. 
 USER: Hello. I am Jerry Garcia.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my reservation due to heavy rainfall at my place, can you modify my reservation?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation on your given name.

USER: Ok, thanks for informing me.

ASSISTANT: Thank you for opting us.