You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Steven Phillips.

ASSISTANT: How may I assist you now?

USER: I need to change my existing reservation due to some health issues. Can you please help me with that?

ASSISTANT: Steven Phillips, please allow me to check with your previous booking for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you, there is no flight reservation available by your name.

USER: Ok, not an issue.

ASSISTANT: Thank you for connecting with us.

USER: Thank you for the information.