You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Eric Green here. I would like to cancel my recent reservation, can you help me with this?

ASSISTANT: How may I serve you?

USER: I need your help to cancel my reservation.

ASSISTANT: Sure, please give me a moment to check your name in our previous list.

USER: Sure, take your own time.

ASSISTANT: No reservation found for the user name that you have give us for checking purpose?

USER: That's fine, thanks for your information.

ASSISTANT: It's my pleasure to help you and than you for reaching us.