You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Due to heavy rains cricket match got postponed, so I need to change my existing reservation. Can you please help me out with that?

ASSISTANT: Sure, I will gleeful to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Myself Linda Evans.

ASSISTANT: Ok, pleasse wait a minute.

USER: Sure.

ASSISTANT: Sorry Linda, there is no active reservation found under your name in our records.

USER: It's ok, thank you for your help.

ASSISTANT: Most welcome.