You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Stephanie Walker. Due to some important work at my office, I need to cancel my reservation. Can you please help me?

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Sure.

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

USER: No problem. Thank you.

ASSISTANT: Thank you for availing us.