You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,how can I assist you?

USER: Due to climate issue, I need to change my existing reservation.Can you please change my reservation?

ASSISTANT: Sure, we are here to help you. May I know your name?

USER: Justin Hernandez is my name.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for your patience. There was no reservation found on your name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for connecting with us. Have a good day.