You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Melissa Brown.

ASSISTANT: How can I help you?

USER: I want to book a ticket from SEA to IAD, can you help me?

ASSISTANT: Your travelling dates please?

USER: My travel dates are 11/26 and 11/28.

ASSISTANT: Do you have any specifications?

USER: I want to depart in the afternoon.

ASSISTANT: Here is a connecting flight with flight number 1012 and fare is 200, providing ticket in economy class. Shall I proceed with booking?

USER: You can book it.

ASSISTANT: Your booking is done in Spirit airlines.

USER: Thank you for booking.

ASSISTANT: Thank you.