You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Do you want me to help you with anything?

USER: I have planned to give the presentation on my project in the college. But they requested me to change the date for presenting it. So I need to change my recent reservation. Will you help me with that?

ASSISTANT: Sure. I am happy to help you. Give me a second.

USER: Thank you.

ASSISTANT: I am sorry to say that there is no reservation found on your name.

USER: It's ok, thank you for checking.

ASSISTANT: May I know your name please?

USER: Shirley Martin here.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.