You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I am Betty Young. I want to change my existing reservation due to bad weather condition.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT:  Give me a minute, I will check the previous list and let you know the details of it.

USER: Sure.

ASSISTANT: Thank you for your time. No reservation found on your name.

USER: Not an issue, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.