[speaker001:] Would you care to join for the picnic tomorrow?
[speaker002:] Much to my regret, I'll have to meet my girlfriend at the airport then.
[speaker001:] We'd like to invite you for our dress party tomorrow evening, are you free?
[speaker002:] Much as we'd like to, but we've booked up already for that time.
[speaker001:] What a pity! You can't join us.
[speaker002:] So sorry. Next time we'll go, thanks anyway.