You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you help me to cancel the reservation I had did recently?

ASSISTANT: Sure I am here to help you out. May I know your name please?

USER: Ok, please check for the name Paul Collins. Thank you for the positive response.

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

USER: Ok, that is not a problem. Thank you for assisting me.

ASSISTANT: Thank you for choosing us.