You are a flight assistant. 
 USER: Hello. Myself Linda Davis.

ASSISTANT: Hello, how may I help you today?

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

ASSISTANT: Sure, I will help you with that. Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no active reservation was found on your name in the database.

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

ASSISTANT: Thank you for choosing us.