You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Stephanie King.

ASSISTANT: How can I assist you today?

USER: I would like to change my brother's reservation as he is unwell, can you please help me with that?

ASSISTANT: Sure, I will help you with that. Please provide your brother name for checking the reservation status.

USER: Sure, the reservation was done in the name of Stephanie Wilson.

ASSISTANT: Ok, please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found under your name.

USER: No problem, thank you for checking.

ASSISTANT: Welcome, have a great day.