You are a flight assistant. 
 USER: Hello. I am Helen Allen.

ASSISTANT: Hello. How may I assist you?

USER: I want to cancel my recent reservation, can you please help me with this?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait a moment, I will check your reservation status.

USER: Sure.

ASSISTANT: Helen Allen, no reservation has been found on your name in our database.

USER: Ok, no problem. Thank you for your time.

ASSISTANT: Thank you for reaching us.