Final answer:
It is not recommended to use an emoji to substitute for a word in a chat or text conversation with a customer.
Step-by-step explanation:
Personally, I think it is not recommended to use an emoji to substitute for a word in a chat or text conversation with a customer. When communicating with a customer, it is important to maintain a professional tone and clarity of communication. Using emojis may be misinterpreted or seen as unprofessional by the customer. It is best to use standard English and clear language to ensure effective communication with the customer.