You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Kathleen Harris here. Could you book my ticket in a connecting flight?

ASSISTANT: Ok, can you please tell me your desired dates for the following journey?

USER: My itinerary dates are 12/26 and 12/28.

ASSISTANT: Kathleen Harris, may I know your arrival and departure airport codes respectively?

USER: My source and destination airport codes are IAD and SEA.

ASSISTANT: Ok, please hold on for a moment.

USER: Sure.

ASSISTANT: There is a flight available for you with 1 connection by Frontier airlines with the price of 100. Can I book a ticket for you?

USER: Please confirm my ticket.

ASSISTANT: Your ticket is reserved with flight-1003.

USER: Thank you.

ASSISTANT: Thank you for approaching our services.