You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am Margaret Williams want to attend a seminar, can you help me to book a ticket on dates 02/15 and 02/17?

ASSISTANT: Sure, please provide your airport codes.

USER: Ok, I would like to travel from SEA to DFW.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: We found flight 1009 in Frontier airlines with single connection and the price is 100.

USER: That's perfect! Proceed with my booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for making us to serve you.