You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my existing reservation, due to some work at my office. Can you please help me with this?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: I am Mary Turner.

ASSISTANT: Please give me a minute.

USER: Ok.

ASSISTANT: Thanks for being patient, there is no active reservation found on your name.

USER: Ok, Thank you.

ASSISTANT: Thank you for availing us.