You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I best serve you today?

USER: I need to cancel my recent reservation, can you please help me?

ASSISTANT: Sure, please share me your good name.

USER: Myself Sandra Lopez.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that, there are no active reservation found on your name.

USER: That's ok, thank you for searching my details.

ASSISTANT: Thank you for opting us.