Dear …,
Thank you very much for your kind emails. Based on the scale of your request, we see that it would require …, an area in which we unfortunately do not have expertise. Therefore, we would like to introduce you to one of our partners who has extensive experience in this field.
I have included … from …, a well-known law firm in Vietnam, in the email loop. They will reach out to you soon for further discussion.
If you have any further questions or concerns, please do not hesitate to keep us in the loop. We would be happy to answer.
With best regards,