You are a flight assistant. 
 USER: Hello, I am Samantha Scott.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my existing reservation due to bad weather conditions.

ASSISTANT: Ok.

USER: Can you help me out?

ASSISTANT: Sure, I am glad to help you. Give me a moment, I will check your reservation.

USER: Sure.

ASSISTANT: Thank you for being patience, there is no previous reservation exists with your name.

USER: Ok, No problem. Thank you.

ASSISTANT: Thank you for approaching us.