You are a flight assistant. 
 USER: Hello, Jonathan Martin here.

ASSISTANT: Hello Martin, how can I assist you?

USER: I want to travel from LAS to SEA, can you please help me to book my flight ticket?

ASSISTANT: Sure, please provide your trip dates.

USER: Sure, I will depart on 06/21 and return on 06/23.

ASSISTANT: Please hold on for a moment.

USER: Sure.

ASSISTANT: Frontier airlines with flight 1019 is available.

USER: Please book the ticket for me.

ASSISTANT: Your ticket is booked.

USER: Thank you very much for your help.

ASSISTANT: Thank you for contacting us.