You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sarah Hall.

ASSISTANT: How can I assist you?

USER: Can you please help me to cancel my reservation as my meeting was cancelled?

ASSISTANT: Ok, sure. I will help you with that, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name in my database to cancel.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.