You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please help me in changing my recent reservation? As I'm unable to catch the flight due to heavy rainfall.

ASSISTANT: I am sorry to know that . I will help you. Please help me with your name.

USER: Sure, my name is Katherine Carter.

ASSISTANT: Please allow me a minute.

USER: Sure, I'll wait for your response.

ASSISTANT: Katherine Carter, I am really sorry to inform you that there is no booking done on your name.

USER: Oh! That's ok, thank you for giving the information.

ASSISTANT: Thank you for reaching us. Have a great time.