You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: Owing an emergency want to change my reservation, can you help me with it please?

ASSISTANT: Sure, please share me your good name.

USER: My name is Katherine Martin.

ASSISTANT: Please wait for a while.

USER: Take your time.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: That's fine, thank you for the response.

ASSISTANT: Thank you for opting us.