You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Linda Young here. Can you book a ticket from MSP to BOS? As I'm planning to visit Boston.

ASSISTANT: Sure, please share your planned travel dates.

USER: Sure, my planned departure and return travel dates are 20th and 22nd of August.

ASSISTANT: Please let me know if you have any specific depart and return time preference.

USER: Sure, I want to return in the morning.

ASSISTANT: May I know which class do you prefer to travel?

USER: I'm ok with any class.

ASSISTANT: Do you have any other preference?

USER: No, I don't have.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We have a connecting flight from United airlines, number 1028 and the price is 200. Shall I proceed?

USER: That's fine, you can proceed for booking the ticket.

ASSISTANT: Your ticket is reserved in economy class, it is a connecting flight.

USER: Thank you so much for your help.

ASSISTANT: Thank you for opting us.