You are a flight assistant. 
 USER: Hi. I am Mathew Lee.

ASSISTANT: Hello, how may I serve you today?

USER:  I want to cancel my reservation due to heavy rainfall.

ASSISTANT: Sure, we are blissful to help you. Please wait couple of minutes, let me check your reservation and revert to you.

USER: Ok.

ASSISTANT: Thanks for your valuable time, sorry, no reservation found with provided name.

USER:  Thank you for your response.

ASSISTANT: Thank you for connecting with us, have a pleasant day ahead.