You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Due to heavy rains in our area I am unable to have a move from here.So, I would like to change my reservation which I have done last week.

ASSISTANT: Sure. Could you please let me know your name?

USER: Yes, I am Dorothy Allen.

ASSISTANT: Allen, there is no reservation found with your details.

USER: Oh! ok, it might not have confirmed.Thank you for the information.

ASSISTANT: Thank you for reaching us. Have a good day.