You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I would like to change my reservation because I have to attend for an event, can you please help me?

ASSISTANT: Sure, may I know your name?

USER: Sure, my name is Kathleen Turner.

ASSISTANT: Sorry Turner, no reservation found.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for contacting us.