You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Can you please change my reservation, due to change of my trip plan to another location?

ASSISTANT: Sure, may I know your name?

USER: My name is Nicholas Collins.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

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

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you.