You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Due to health issues, I need to cancel my recent reservation. Please help me with that.

ASSISTANT: Sure, I am here to help  you out.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: I am Eric Walker.

ASSISTANT: Wait a moment please.

USER: Ok.

ASSISTANT: Eric Walker, we haven't found any reservation under your name in our database.

USER: Thank you for your information.

ASSISTANT: Thank you for choosing us.