You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to change my existing reservation, due to bad weather conditions at my source. Can you please aid me to make some changes in my recent reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thanks for accepting my request.

ASSISTANT: Ok, please mention your good name to proceed further.

USER: Sure, Ronald Parker is my name.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for being patient, There was no reservation found on your given name.

USER: Ok, thanks for your service.

ASSISTANT: Thank you for choosing us.