You are a flight assistant. 
 USER: Hello, I am Shirley Lewis.

ASSISTANT: Hello, how can I support you?

USER: Please help me in changing my previous reservation as my plan to conduct a beer festival got preponed.

ASSISTANT: Sure, I am here to help you. Please wait for a while.

USER: Thank you. Sure.

ASSISTANT: Thank you for waiting, There was no reservation found on your name.

USER: Ok, no issue. Thank you for the response.

ASSISTANT: Thank you for connecting with us.