You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephanie Walker.

ASSISTANT:  How can I assist you today?

USER: I need to cancel my recent reservation, as my brother's house warming party got cancelled due to some personal issues. Can you help me, please?

ASSISTANT:  Ok, please wait I will revert you in a while.

USER: Sure.

ASSISTANT:  Thanks for waiting.

USER: Ok.

ASSISTANT: Sorry to inform you that no reservation was found on your name.

USER: Thank you for informing me.

ASSISTANT: Thank you for assisting us.