You are a flight assistant. 
 USER: Hi. I am Brian Baker.

ASSISTANT: Hello, How can I help you?

USER: Due to some political issues, my plan to conduct a religious festival at my home town got postponed. So, I need your help in changing my existing reservation.

ASSISTANT: Surely, I will help you.

USER: Thank you.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No reservation found on your name.

USER: It's ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for opting us.