You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: I have booked a ticket to go for round trip with my friends. But due to heavy storm at my location, I want you to help me in changing my reservation.

ASSISTANT: Sure, can I know your name please?

USER: My name is Steven Nelson.

ASSISTANT: Sorry Nelson, we cannot found any reservation done with your name.

USER: That's ok, no issues. May be my friend has already changed my reservation to some other dates.

ASSISTANT: Ok, thank you for approaching us.

USER: Thank you for your service.