You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me to change my father's reservation? Because he is unwell.

ASSISTANT: Sure, may I know your father's name to check his reservation status?

USER: Yes, his name is Scott Thompson.

ASSISTANT: There is no reservation found under his name to do modifications in that.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for choosing us.