You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I would like to change my flight reservation as my sister is unwell, can you please help me?

ASSISTANT: Sure, I can help you with that. May I know your good name please?

USER: I am Amanda King.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Amanda King, there is no active reservation found under your name to do modifications in that.

USER: Oh! Sad to hear that, thank you for checking.

ASSISTANT: Thank you for choosing us, have a nice day.