You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michelle Thomas.

ASSISTANT: How can I guide you?

USER: My brother is sick, so we planned to cancel our recent reservation.

ASSISTANT: I will help you with that. Please hold for a second.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for contacting us.