You are a flight assistant. 
 USER: Hello, I am Raymond Thompson.

ASSISTANT: Hello. How may I help you?

USER: I want to reschedule my recent reservation as my plan to visit the Caswell House in Austin got postponed.

ASSISTANT: Ok. There is no seat reserved with any one the flights, we can not proceed further.

USER: Ok fine.

ASSISTANT: Thank You, Have a pleasant day!.

USER: Thanks for your assistance.