You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ashley Young.

ASSISTANT: How may I assist you today?

USER: I am planning to change an existing reservation, due to health issue. Can you please change my ticket?

ASSISTANT: Sure, I will help you with that, please hold on for a moment to check your reservation status.

USER: Sure, take your own time.

ASSISTANT: Ashley, I did not find any reservation with your name in my database.

USER: That's fine, thank you for your help.

ASSISTANT: You are welcome.