person A: I'm worried that if my Aunt doesn't answer her phone_comma_ I won't be able to give her the keys so she can babysit for me this weekend.
person B: Oh no! Are you going away this weekend?
person A: Yes_comma_ I am going on a business trip by my son has an important tennis match this weekend. I don't know what I'll do if my Aunt doesn't answer soon.
person B: Hopefully_comma_ she answers soon. Maybe she's taking a nap or is in the shower.