You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I need to change my existing reservation, can you please help me?

ASSISTANT: Sure, may I know your name?

USER: Myself Laura Jackson.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: Sorry, we could not find any reservation on your name.

USER: That's ok, thank you searching my details.

ASSISTANT: Thank you for reaching us.