You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I am planning to visit New England Aquarium at Boston, could you please help me with booking a flight ticket from MSP to BOS?

ASSISTANT: Sure, may I know your period of travel?

USER: I would like to depart on July 9th and return on July 11th.

ASSISTANT: Do you prefer any particular time for your depart and return?

USER: No.

ASSISTANT: Is there any class preference you have?

USER: I need a direct flight in economy class.

ASSISTANT: May I know your connection limit?

USER: I need a direct flight.

ASSISTANT: Ok, do you have any other preference?

USER: I have no other preferences.

ASSISTANT: May I know your name please?

USER: I am Kevin Thompson.

ASSISTANT: We don't have any direct flight available between given airport.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you.