You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to change my existing reservation due to bad weather condition, can you please help me with that?

ASSISTANT: Sure, can you please help me with your name?

USER: My name is Debra Jackson.

ASSISTANT: Thank you. I will check your reservation status and let you know.

USER: Ok.

ASSISTANT: Sorry, I have not found any reservation under your name in our database.

USER: No problem, thank you.

ASSISTANT: You are welcome and thank you for reaching us.