You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: I am Nicholas Rodriguez. I want to change my existing reservation due to some health issues I cannot attend a conference. Could you please help me?

ASSISTANT: Sure, we are here to assist you. Please give me a minute, I will check the status and revert to you.

USER: Sure.

ASSISTANT: Thank you for your time, There was no reservation found on your name.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for availing us.