person A: So the first time I ever went to donate blood_comma_ after I signed up I instantly regretted it. I was soo worried about that big needle_comma_ and when it finally came time? It wasn't even a big deal_comma_ it was soo easy.
person B: Everything is harder until we do it. And am proud of you for donating blood. It is one of the good habit of this human race i would say.
person A: Thank you! I felt a lot better after having done it. Do you know what blood type you are? I'm O+_comma_ so I feel like I really aught to donate more.
person B: yeah am B+_comma_ O+ is quite common and it can match for other blood group and O-ve is the opposite