You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kenneth Taylor.

ASSISTANT: How can I assist you?

USER: Since my project seminar schedule is postponed, I want you to help me in changing my existing reservation. Please help me with that.\.

ASSISTANT: Sorry, there is no reservation found. Thank you for reaching us.

USER: That's ok, thanks for the information.