You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I assist you?

USER: I am Ruth Phillips. I want to change my reservation as my plan to meet my share holder is postponed. Can you help me with that?

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name to change.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us.