You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Due to sudden rainfall at my source, I want to cancel my recent reservation. Can you please help me with this?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait a moment, I will check the status of your reservation.

USER: Sure.

ASSISTANT: May I know your name please?

USER: Sure, I am Helen Williams.

ASSISTANT: Helen Williams, no reservation has been found on your name in our database.

USER: Ok, Thank you.

ASSISTANT: Thank you for choosing us.