You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you today?

USER: I am Andrew Martinez. Owing an emergency want to change my reservation, can you help me with it please?

ASSISTANT: Sure, please hold on for a moment, let me check.

USER: Ok.

ASSISTANT: I am sorry there are no reservations with your name.

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

ASSISTANT: Thank you, have a good day.