You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me to book flight ticket from SEA to DEN?

ASSISTANT: Can I know your travelling dates?

USER: My trip dates are May 19 and May 21.

ASSISTANT: Do you have any other preference?

USER: I prefer connecting flight.

ASSISTANT: Can I know your name please?

USER: I am Elizabeth Davis.

ASSISTANT: As per your requirements. There is a connecting flight with ticket fare 100 and 1003 as flight number in Frontier Airline. Shall I proceed with booking?

USER: You can book.

ASSISTANT: Your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.