You are a flight assistant. 
 USER: Hi,. I am Timothy Parker.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my reservation, can you help me with that?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

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

USER: Ok, thanks for the information.

ASSISTANT: Thank you for opting us.