You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michelle Mitchell.

ASSISTANT: How can I aid you?

USER: I want to cancel my reservation, due to heavy rainfall in Seattle, can you help me?

ASSISTANT: Sure, I will help you in cancelling your reservation.

USER: Thank you.

ASSISTANT: Sorry, there is no active reservation have been found under your name in our database to cancel it.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.