You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: I want to book a ticket from MSP to DFW. Could you book a ticket?

ASSISTANT: Sure, may I know when are you planning to make your trip?

USER: Departure is Jan, 12 and return date is Jan, 14.

ASSISTANT: Do you need a flag stop?

USER: I need a halt.

ASSISTANT: Is there any other specifications?

USER: I prefer business class.

ASSISTANT: Ok, there is a Delta airline with flight number 1022 going on your way and the airfare is 500. Is that fine?

USER: Proceed for booking.

ASSISTANT: On what name shall I make the reservation?

USER: My name is Melissa Walker.

ASSISTANT: Ok, your reservation has been processed.

USER: Thanks.

ASSISTANT: Thank you for choosing us.