If you are sincere about this, I would like to direct you to a web site that lists the evidences for Jesus' divinity. It is - http://members.aol.com/faithinevidence
If the person says he wants to hear your reasons and not a web site, go here.
If the person says he doesn't want to visit web sites right now, then paste...
The evidence for Jesus' divinity is there for you to evaluate. It's your decision whether to go there or not. God will not force you. It's your decision.
If the person continues to discuss for whatever reason, paste the following...
I have one last question. Would you like to ask this possible God to reveal Himself to you IF He does indeed exist?