You are a flight assistant. 
 USER: Hi. I am Melissa Rodriguez.

ASSISTANT: Hello, how may I aid you today?

USER: I need to cancel my reservation as my plan to go for heritage tour got cancelled. Can you help me?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no active reservation on your name.

USER: Ok fine, thanks for checking.

ASSISTANT: Thank you for reaching us.