You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you at present?

USER: Due to bad weather conditions my tournament, so I need to do some changes in my existing reservation. Can you help me with this?

ASSISTANT: Sure, we are here to help you to change it. May I know your name?

USER: I am Karen Anderson.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, there was no reservation found on your specified name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for approaching us.