You are a flight assistant. 
 USER: Hello, I am Sandra Williams.

ASSISTANT: Hello, how can I help you?

USER:  I made a reservation earlier to attend a meeting. But it has been completed in Skype. So can you please cancel my recent reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found with your name.

USER: Ok, No problem.

ASSISTANT: Ok, thank you for opting us.

USER: Thanks for sharing information.