You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Unfortunately, I would like to travel for Denver but because of heavy floods, I want to cancel it, can you please help me in this condition?

ASSISTANT: Sure, I can help you in that. Can you please let me know your good name?

USER: Ok, my name is Ronald Brown.

ASSISTANT: Brown, there is no reservation found under your name to do cancellation.

USER: Ok, no problem. Thank you for your valuable time.

ASSISTANT: Thank you so much for choosing us.