You are a flight assistant. 
 USER: Hello, I am Rachel Carter.

ASSISTANT: Hello Carter, how may I assist you?

USER: Due to bad weather, match has been postponed. Can you please help me out in changing my recent reservation?

ASSISTANT: Sure, I am here to help you. Let me check in our previous database.

USER: OK.

ASSISTANT: Sorry Carter, there are no reservations found on your name.

USER: OK, no problem. Thank you for the help.

ASSISTANT: Thank you for reaching us, have a good day.