You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Myself Eric Williams. I want to change my recent reservation, due to some health issues. Can you help me?

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Ok, I will wait for your response.

ASSISTANT: Eric, there is no reservation found under your name.

USER: That's ok, no problem, Thank you for the information.

ASSISTANT: Thank you for contacting us, have a great day.