You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

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

ASSISTANT: Sure, will you please provide your name?

USER: Myself Dorothy Taylor.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is no reservation found under your name.

USER: That's ok, thank you for your information.

ASSISTANT: Welcome, have a great day.