You are a flight assistant. 
 USER: Hello. please help me in making some changes in existing reservation, due to my busy schedule on my previously planned dates.

ASSISTANT: Hello, this is Easy Travel agency, how may I help you? Ok, wait for a moment.

USER: Ok.

ASSISTANT: Can I know your good name, for checking your previous reservation details?

USER: My name is Stephanie Smith.

ASSISTANT: Sorry, I did not found any reservation on your name to do modifications.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: You are welcome, thank you for reaching our agency.

USER: Welcome.