You are a flight assistant. 
 USER: Hi. I am Michelle Johnson.

ASSISTANT: Hello, how can I aid you today?

USER: Due to sudden change of my business meeting because of some technical problem, I need to change my reservation. So, can you help me with that?

ASSISTANT: Sure, we are here to help you to change it.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: Thanks for your time, there was no reservation found on your name.

USER: Ok, not an issue. Thank you for your quick response.

ASSISTANT: Thank you for approaching us.