View Source ExGram.Model.ForceReply (ex_gram v0.53.0)
Upon receiving a message with this object, Telegram clients will display a reply interface to the user (act as if the user has selected the bot's message and tapped 'Reply'). This can be extremely useful if you want to create user-friendly step-by-step interfaces without having to sacrifice privacy mode. Not supported in channels and for messages sent on behalf of a Telegram Business account.
Check the documentation of this model in https://core.telegram.org/bots/api#forcereply