You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: I would like to cancel my flight reservation as I am sick, can you please help me?

ASSISTANT:  I am here to help you with your concern.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: I am Amy Phillips.

ASSISTANT: Wait a moment.

USER: Sure.

ASSISTANT:  Sorry, there is no reservation found for the user name in our back end to cancel it.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for reaching us.