You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I want to change my reservation, due to some health issues. Can you please change my existing reservation?

ASSISTANT: Sure, we can help with that. May I know your good name?

USER: Sure, please check the reservation on the name of Jacob Robinson.

ASSISTANT: There is no active reservation found on your name.

USER: Ok, Thank you for providing information.

ASSISTANT: Thank you for contacting us.