Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_23477312_1 (service VARCHAR, train_name VARCHAR, departure VARCHAR)
### Question:
What's the service number of the Pune Duronto train that departures at 21:35?
### Answer:
SELECT service FROM table_23477312_1 WHERE train_name = "Pune Duronto" AND departure = "21:35"