What should the first reply ask?
Begin with arrival and departure dates. “This weekend” can mean different nights, particularly when someone is travelling across time zones. Repeat the dates clearly rather than inferring them from the day of the message.
Illustrative reply: “Which dates would you like to check in and check out? How many guests will be staying?”
Read the message before asking. If the guest already supplied dates and a guest count, acknowledge them and ask only for the missing detail. A conversation that starts by ignoring the answer feels broken even when the questions are sensible.
Ask about the number of rooms when the guest count could mean different arrangements. Two colleagues may want separate rooms. A family may need an arrangement that depends on the hotel’s occupancy rules.