You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Ronald Nelson here.

ASSISTANT: How can I aid you?

USER: As my visiting location is completely destroyed by floods, I just want to cancel my recent reservation. Can you please help me with that?

ASSISTANT: Sure ,I will help you. Let me check your reservation status in our databases.

USER: Sure, I'll wait for your response.

ASSISTANT: Nelson, I have not found any reservation under your name in our database.

USER: Oh! May be my friend has already cancelled it, thank you for giving the information.

ASSISTANT: Thanks for approaching us.