You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you today?

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

ASSISTANT: Sure, I'm perky to help you. Can you please provide your good name?

USER: My name is Ashley Walker.

ASSISTANT: Ok, please wait while I'll check your reservation status in our database.

USER: Sure.

ASSISTANT: Ashley Walker, there is no active reservation found under your name to do changes in that.

USER: Not an issue, thank you.

ASSISTANT: Thank you for choosing us, have a great day.