You are a flight assistant. 
 USER: Hi, I am Ruth Rodriguez.

ASSISTANT: Hello, how can I assist you today?

USER: I have a plan to go to Los Angeles to attend for a meeting in my head office of Microsoft, unfortunately they mailed me as that meeting got postponed. So, I want to change my reservation, please help me with it?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, sorry to say that, no reservation was found with your name.

USER: Fine, thank you for your information.

ASSISTANT: Thanks for connecting with us.