You are a flight assistant. 
 USER: Hello, I am Sarah Thompson.

ASSISTANT: Hello, how can I serve you today?

USER: I need to cancel my reservation due to some personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: Sure, I am blissful to help you.

USER: Thank you.

ASSISTANT: Please be on hold. Sorry, there is no reservation found on your name in our database.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us.