You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you now?

USER: Will you please assist me to change my existing reservation as my plan to meet my friend got postponed?

ASSISTANT: Sure, I will help you with that. May I know your good name please?

USER: Thank you. Susan Rodriguez here.

ASSISTANT: Thank you for your name, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: No issue. Thank you for the information.

ASSISTANT: Thank you for visiting us, we hope see you again.