You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Karen Carter, can you help me to change my reservation?

ASSISTANT: Sure, can I have your name please?

USER: Karen Carter here.

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

USER: Not an issue.

ASSISTANT: Thank you for reaching us.