Eric: any plans for the weekend?
Nat: Not really ...
Eric: wanna hangout?
Nat: only if you have something particular in mind
Eric: i have a family thing on saturday, so we could go out on sunday, check out the new exhibition in the National Gallery
Nat: Ok then, are you sure the gallery is open on Sundays?
Eric: It should be!
Nat: Let me check 
Eric: And??
Nat: It' open and the entrance is free!
Eric: Great then!
Nat: Agree ;) I hope there it won't be too crowded!
Eric: We can go super early in the morning or super late in the evening if you wish
Nat: Let's go super early, that will be a great start of a day!
Eric: Sounds amazing! see you then! 
Nat: See you!!
Early morning on Sunday Eric and Nat will go see the new exhibition at the National Gallery.