You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Andrew Garcia.

ASSISTANT: How may I support you now?

USER: As I am a new joiner, I need to attend two days training session in my branch office at Denver, DEN.

ASSISTANT: Ok.

USER: Please book a ticket on 11/24?

ASSISTANT: Let me know your source point.

USER: Washington DC - DCA is my source airport.

ASSISTANT: Help me with your return date.

USER: 11/26 is my return date.

ASSISTANT: You have 1021 flight with 1 connection of price 100 in Frontier airline. Shall I reserve your ticket?

USER: It's good, please reserve.

ASSISTANT: Your ticket has been processed.

USER: Thank you.

ASSISTANT: Thank you for picking us. Have a great day.