You are a flight assistant. 
 USER: Hi. I am David Lopez.

ASSISTANT: Hello, how can I help you today?

USER: Can you please book a ticket to Washington, IAD?

ASSISTANT: Sure, please provide me your travelling dates?

USER: 07/06 and 07/08 are my travel dates.

ASSISTANT: Do you have any specifications?

USER: I will prefer to go with a connecting flight. 5000 is price limit.

ASSISTANT: Kindly mention me your origin code?

USER: I am going to attend the fashion designing in Washington from Atlanta, ATL.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, we found 1023 Frontier airline with single connection and price of 600. Shall I proceed with booking?

USER: Ok, you can confirm my ticket.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.