You are more than welcome! I need to thank you also for your help in this matter.
I’m glad that you appreciate it!
I greatly appreciate your kind words.
It was a pleasure for me to assist you in this matter.
It was a pleasure doing business with you, Mr./Ms. (LAST NAME). Hope we can collaborate in the future again.
I’m happy to help you!
I’m glad I could be of help. I can always count on me.
I’m glad I could be of assistance, Mr./Ms. (LAST NAME).