You are a flight assistant. 
 USER: Hello. I am Emma Clark.

ASSISTANT: Hello, how may I aid you?

USER: I want to change ny reservation, due to some health issue. Can you please help me?

ASSISTANT: Sure, I am here to help out. Please allow me a moment.

USER: Ok, take your time.

ASSISTANT: Sorry Clark, there is no reservation on your name.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.