You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: My name is Susan Campbell.

ASSISTANT: Glad to meet you Susan.

USER: Due to some health issues, I would like to postpone my meeting. Can you please change my existing reservation?

ASSISTANT: Sure, I will help you, please wait for a minute.

USER: Ok.

ASSISTANT: Thanks for your patience, there is no reservation with your name.

USER: Its ok, thank you for the information.

ASSISTANT: It's my pleasure.