You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. Can you please tell me how can I assist you?

USER: I want to cancel my brother's reservation because he have some urgent work at his office, can you please help me out?

ASSISTANT: Ok, sure. Can you please tell me your brother name to search for his reservation?

USER: Sure, his name is Andrew Scott.

ASSISTANT: Sorry, no reservation found on your name.

USER: Not an issue, thank you for the information.

ASSISTANT: Most welcome, have a nice day.