You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: Melissa Moore here. I would like to visit to SFO, can you help me to book a flight ticket from SEA?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My preferable dates are 11/23 and 11/25.

ASSISTANT: Thank you for providing all necessary details. Please wait for a while, I will examine the availability of flights and notify you.

USER: Sure.

ASSISTANT: We have found a connected flight with Frontier airlines, flight number 1003 and the fare of 200.

USER: Proceed to booking.

ASSISTANT: Your booking is done.

USER: Thanks for helping me.

ASSISTANT: Thank you for opting us.