You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need to have a connecting flight for my journey to Boston in the month of September to attend an event. Can you help me in booking a flight ticket?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: Thank you for considering my request. My travelling dates are Sep 9 and Sep 11.

ASSISTANT: Ok, please share me your travelling airport codes.

USER: Ok, my travelling airport codes are MSP and BOS.

ASSISTANT: Ok, do you have any specifications?

USER: I need a connecting flight for my journey.

ASSISTANT: Do you prefer any airlines?

USER: I prefer normal-cost airlines.

ASSISTANT: Sorry, no flights are available on your route.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Ok, may I know your name?

USER: Sure, my name is Katherine Garcia.

ASSISTANT: Thank you.