You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I want to change my flight reservation as my mother is unwell, can you please help me?

ASSISTANT: Sure, I am here to help you. May I know your name please?

USER: The reservation was done in the name of Joseph Hall.

ASSISTANT: Please give me a moment to check your reservation status.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name in our records.

USER: No problem. Anyway, thank you for checking.

ASSISTANT: Thank you for approaching us.