You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

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

ASSISTANT: Sure, I am here to help you out. Please allow me a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry Jennifer Wilson, there is no active reservation on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank your reaching us.