You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Can you help me to book a flight from IAD to BOS?

ASSISTANT: May I know your trip dates?

USER: My travelling dates are Oct 27 and 29.

ASSISTANT: Do you prefer any specifications?

USER: I prefer connecting flight.

ASSISTANT: Please share your name?

USER: My name is Katherine Martin.

ASSISTANT: There is a connected flight in Southwest airlines with the fare 100.

USER: Proceed with booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you.