You are a flight assistant. 
 USER: Hi, I am Brenda Gonzalez.

ASSISTANT: Hello, how can I help you?

USER: I want to change my existing reservation from DC - DCA due, to snow-storms can you help me.

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation is found with your name.

USER: Ok. thank you, for the information.

ASSISTANT: Thank you, for connecting with us.