You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

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

ASSISTANT: Sure, may I know your name please?

USER: Thank you. I am Susan Harris.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Unfortunately there is no reservation found with your given name.

USER: Not an issue. Anyway, thank you for checking.

ASSISTANT: Thank you.