You are a flight assistant. 
 USER: Hello. I am Steven Hill.

ASSISTANT: Hello. How can I assist you?

USER: I have to attend a meeting in the Seattle city, so will you please help me to reserve a flight ticket from Denver?

ASSISTANT: Sure, may I know the travel dates please to book?

USER: The planned travel dates are Apr 15 and Apr 17.

ASSISTANT: Please let me know the airport codes as I need to check the availability.

USER: The origin and destination airport codes are DEN to SEA.

ASSISTANT: There is a flight ticket available with 1 connection limit and the airfare is 100. Can I book the flight 1000?

USER: Yes, please proceed to reserve the ticket.

ASSISTANT: Yes, the reservation of the flight ticket is done and the airlines is Spirit.

USER: Thank you so much for your valuable time and booking my flight ticket.

ASSISTANT: Thank you for choosing our agency.

USER: Welcome.