situational communication

situational communication
1A:That lecturer is really knowledgeable.I wish I could meet him.
Your reply:_______________________________________________
2A:Haven't we met somewhere?
Your reply:_______________________________________________
3Your suggestion:_________________________________________
A:Tt's very nice of you to offer.
4 There is something wrong with my bike,but I have to go for an appointment.What can I do?
Your answer: