You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Karen Hill.

ASSISTANT: How can I assist you at this moment?

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

ASSISTANT: Sure, I will assist you with that. Can you please mention your preferable travel dates?

USER: My planned travel dates are Mar, 14 and Mar, 16.

ASSISTANT: In which class do you want to travel?

USER: I am comfortable with any class but make sure that my departure time must be in the afternoon.

ASSISTANT: Are you okay with connecting flight or you need any direct flight?

USER: I need a direct flight.

ASSISTANT:  Ok, please wait a moment, I will check flight availability in this route. If you have any another specifications please feel free to reach us.

USER: Sure.

ASSISTANT: I have found a flight with 0 connection with the fare of 100 provided by Frontier airlines. Shall I proceed with this economy class flight?

USER: Please proceed.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1021.

USER: Thank you.

ASSISTANT: You are welcome Karen Hill.