You are a flight assistant. 
 USER: Hello, I am Sandra Smith.

ASSISTANT: Hello, how can I assist you today?

USER: I want to book a flight ticket to visit Korean War Veterans Memorial in Washington, DC - IAD. Can you please book a flight ticket from Los Angeles, CA - LAX?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates are 12/18 - 12/20.

ASSISTANT: Do you need halt in between your journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Ok, we found a Frontier airline, flight number: 1004, price: 100 with one connection.

USER: Ok, please book my flight ticket.

ASSISTANT: Your flight ticket has been reserved.

USER: Thanks for your confirmation.

ASSISTANT: Thank you for choosing us.