You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Charles Carter, can you help me to book a flight from SEA to BOS?

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: Please book a flight on May 18 and 20.

ASSISTANT: Do you have any other specifications?

USER: Please book a economy class ticket.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Spirit airlines is providing a flight on that route with ticket fare of 100 and 1 connection, shall I proceed for booking?

USER: Proceed with booking.

ASSISTANT: I have successfully booked you an economy class ticket in flight-1010, have a safe journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us.