Domains: Flights_13, Buses_13

user: Find me a one way flight on Sunday this week

system: From where do you leave?

user: From Portland, OR

system: What is the destination?

user: The destination is Vancouver

system: There are 4 flights. How about Alaska Airlines that leaves at 10:10 am and has 1 stop. the cost is $267

user: Where does it depart from? The ticket is refundable or not?

system: The departure place is PDX International Airport. The ticket is not refundable

user: Is there any other flights?

system: How about American Airlines at 10:45 am and has 1 stop. the cst is $216

user: Is there any other? I like united airlines and there are 3 people

system: How about united airlines at 10:35 am and has 1 stops. the cost is $229

user: That's nice one. Look for a bus there for one people n the 14th

system: How about the bus at 6:50 am and has 0 transfers. the cost is $40

user: Is there any other bus?

system: How about the one at 8:10 am and has 0 transfers. the cost is $39

user: From where does the bus leave?

system: It leaves from Portland Bus Station

user: Where is the reaching station

system: It is Pacific Central Station

user: Do you have any other buses?

system: How about the one at 10:20 am and has 0 transfers. The cost is $37

user: That's good. Now book the flight.

system: Please confirm this: the flight is from portland. the flight goes to vancouver. the airlines is united airlines. the departure date is march 14th and the number of passengers is 3. the seating is economy

user: That's perfect

system: The ticket confirmed successsfully

user: Where does the flight arrive

system: It is YVR international airport

user: Thank you so much

system: Do you need anything else

user: No that's all for now

system: Have a nice day