Do you have any knowledge on how one should prepare, or do before donating blood?
user
I really couldn’t say.  One human:
assistant
Okay, so you dont have the answer to this?
user
I cannot answer this.
assistant
Do you have any knowledge on how one should prepare, or do before donating blood?
user
I really couldn’t say.  One human:
assistant
Okay, so you dont have the answer to this?
user
It sounds like you are getting help from an actual person.  That is good!
assistant
Do you have any knowledge on how one should prepare, or do before donating blood?