[speaker001:] Stephen, can you work overtime tonight?
[speaker002:] What's wrong? We have been working overtime recently.
[speaker001:] The holiday is coming so we need to finish our task.
[speaker002:] Must we finish our task before the holiday?
[speaker001:] Yes. The contract must be kept.
[speaker002:] OK. I know. But Bob wanted to change shifts with me tonight.
[speaker001:] Did he say why?
[speaker002:] He said he would celebrate his girlfriend's birthday.
[speaker001:] Don't worry. I will tell him about that.
[speaker002:] It is convenient for me to work overtime tonight.
[speaker001:] Thank you for that. And I will double your pay.