You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: Due to heavy rainfall, I am unable to travel. Can you please amend my reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know on whose name the ticket has been reserved formerly?

USER: Ticket has been reserved on the name of James King.

ASSISTANT: Sorry James King, there are no flights reserved on your given name formerly?

USER: Ok, no problem. Thank you.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.