I am calling [the flower stall, florist] to purchase a flower bouquet that I'd like [to be] delivered on Monday.
**** this sentence is the combination of the following using restrictive relative clause ****
1. I am calling the florist to purchase [a flower bouquet].
2. I would like [the flower bouquet] to be delivered on Monday.
- an object must be added after the verb "call";
(format: call somebody to do something)
- an infinitive must be added after the verb "like";
(format: would like somebody/something to do something).
past participle in a passive infinitive construction (to be + past participle)
> would like
a verb phrase (modal + base verb) to express a request (or what you want) in a polite way