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

ASSISTANT: Hello, how can I help you?

USER: Due to heavy rainfall at my place I want to cancel my reservation, can you please help me out?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, thank you for your response.

ASSISTANT: Thank you, have a nice day.