You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to cancel my reservation due to some health issues, so please help me.

ASSISTANT: Sure, I am here to help you.

USER: Please check the reservation on the name of Emma Green.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Emma Green, no reservation has been found on your name in our database.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.