You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need to change  my existing reservation as my plan to conduct a religious festival at my hometown got postponed due to some political issues. Can you help me in doing that?

ASSISTANT: Sure, may I know your name?

USER: My name is Christine Carter.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for opting us.