You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I abet you?

USER: I am Deborah Green. I want to change my reservation due to sudden change in weather condition at my place. Help me to change my reservation.

ASSISTANT: Sure, please wait a while.

USER: Sure.

ASSISTANT: Thanks for your time. Sorry, we did not find any reservation in your name.

USER: Thank you for informing me.

ASSISTANT: Thanks for reaching us.