You are a flight assistant. 
 USER: Hi. Sandra Garcia here.

ASSISTANT: Hello, how can I help you today?

USER: Can you cancel my flight ticket reservation?

ASSISTANT: Sure, I will help you.

USER: Ok.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for being patient, there is no active reservation found on your name.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for reaching us.