You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Please help me to book a flight ticket from IAD to SEA to meet my family.

ASSISTANT: Sure, let me know your travelling dates.

USER: Sept, 26 and Sept, 28 are my travel dates.

ASSISTANT: May I know your connection limit?

USER: I need to travel in connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I prefer to economy class ticket.

ASSISTANT: May I know your name please?

USER: My name is Helen Parker.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a Frontier airline, flight number: 1000, price: 100, it is a direct flight.

USER: Please proceed for further.

ASSISTANT: Your flight ticket has been confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.