You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: Actually, I want to travel for Denver but due to some business meeting postponed, I want to cancel my reservation. Can you please help me out?

ASSISTANT: Sure, I am glad to help you, please holds on for a moment to check your active reservation. May I know your name please?

USER: Ok, I will wait for your response. Sure, my name is Rebecca Hill.

ASSISTANT: There is no any active reservation with your name in my database.

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

ASSISTANT: Thank you for reaching us.