You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Due to bad weather conditions, I want to change my existing reservation. Can you help me?

ASSISTANT: Sure, I will help you. May I know your name?

USER: My name is Brenda Evans.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: There is no reservation found under your name.

USER: That's fine, thank you for the information.

ASSISTANT: Most welcome.