You are a flight assistant. 
 USER: Hello. I am Gregory Martinez.

ASSISTANT: Hello, how may I assist you today?

USER: Could you help me in booking a flight ticket from SEA to CLT?

ASSISTANT: Sure, could you help me with your travelling dates?

USER: My departure day is May 11, return day is May 13.

ASSISTANT: Do you have any other preferences?

USER: I need a connecting flight.

ASSISTANT: There is a flight on Delta airline, flight number 1018 with the fare of 200. Can I proceed?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.