Ramzi: Nice day, isn't it?

Cika: Yes, it is. Nice weather we're having.

Ramzi: Look! This is a fantastic sight!

Cika: Yes, I agree. I think it's spectacular!

Ramzi: The weatherman says it'll be sunny today.

Cika: Really? Let's go camping then.

Ramzi: I'm sorry, I'd love to but I can't. I have to finish my geography project.

Cika: Oh, by the way, how was your vacation?

Ramzi: We had a great time. But during the trip. We had a flat tire.

Cika: That's terrible.

Ramzi: (bleep!) That's my mobile phone. I'm afraid I must go now. Have a good day.

Cika: You too. See you!

Answer the following questions based on the dialogue.

Whose phone is beeping?