You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I need to cancel my reservation due to my planned event got cancelled so please help me with that.

ASSISTANT: Sure, I am oblige to help you. Can you please provide your name to check your previous reservation?

USER: Sure, please check the reservation with my name Ronald Campbell.

ASSISTANT: Ok, please wait a while.

USER: Sure, take your time to check.

ASSISTANT: We regret that, there is no reservation found with your name in our records.

USER: Oh! May be booking has not done properly. Anyway, thank you for your time.

ASSISTANT: Thank you for reaching us, have a great day.