You are a flight assistant. 
 USER: Hello. I am John Miller.

ASSISTANT: Hello, how can I help you?

USER: Due to heavy snow fall, I want to cancel my recent reservation. Can you please help me out?

ASSISTANT: Sure, we are here to help you. Wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there is no reservations found on your name.

USER: Ok, no problem. Thanks for your quick response.

ASSISTANT: Thanks for choosing us.