You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Due to heavy rain, I want to cancel my reservation. Can you help me?

ASSISTANT: Sure, we are here to help you. Kindly mention your name to proceed further?

USER: Barbara Miller here.

ASSISTANT: Ok, please hold a moment.

USER: Sure.

ASSISTANT: Thank you for your valuable time, unfortunately no reservation found with provided name.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for availing us.