You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to travel from DCA to BOS, can you help me to book a flight ticket?

ASSISTANT: Sure, I will help you with that. May I know your dates of journey.

USER: My travel dates are Oct 27 and Oct 29.

ASSISTANT: Ok, please let me know your preferred class.

USER: I am comfortable with any class.

ASSISTANT: Sure, I need to know your preferred connection limits. Please can you provide me?

USER: I prefer direct flight for this trip.

ASSISTANT: Sorry as per your preference there is no direct flight available at your preferred location.

USER: No problem, thank you for the information.

ASSISTANT: Ok, please can I know your name for data purposes?

USER: My name is Melissa Carter.

ASSISTANT: Ok, thank you for choosing our agency.