You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER:  I am Virginia Perez want to change my reservation due to heavy snow storm. Can you help me in changing?

ASSISTANT: Sure. Please wait a while.

USER: Ok.

ASSISTANT: Thanks for your time. We didn't found any reservation by this name.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for choosing us.