You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Mary Thompson here.

ASSISTANT: Thompson, how can I assist you today?

USER: Due to the heavy rains, I want to cancel my recent reservation.

ASSISTANT: Sure, I can help you for cancelling your ticket. Please, let me check. Sorry, I have not found any reservation by your name.

USER: That's ok. Thank you for your support.

ASSISTANT: Thank you for contacting us.