You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure, I am glad to help you. May I know your name to check with the status?

USER: I am Melissa Mitchell.

ASSISTANT: Sorry, there is no active reservation found under your name to cancel.

USER: No problem, thank you for the checking.

ASSISTANT: Thank you for reaching us.