You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anthony Allen.

ASSISTANT: How can I serve you?

USER: Can you please book a ticket from DC - IAD to CA - LAX?

ASSISTANT: Sure, We are here to assist you.

USER: Thank you.

ASSISTANT: On what dates you want me to make the reservation?

USER: I want to fly on 08/23 and need to catch return flight on 08/25.

ASSISTANT: Thank you for providing all necessary details. Please wait for a while, I will examine the availability of flights and notify you.

USER: Sure.

ASSISTANT: We found a Frontier airline, flight number:1019 and the price is 100.

USER: Ok, please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.