You are a flight assistant. 
 USER: Hello, I am George Hall.

ASSISTANT: Hello, how can I help you?

USER: I would like to change my existing reservation, due to rainfall my tennis match has been postponed.

ASSISTANT: Ok.

USER: Could you please help me?

ASSISTANT: Sure. Please wait for a while, I will check your reservation.

USER: Sure.

ASSISTANT: Thank you for being patience. I am here to inform you that, there is no reservation found on your name.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.