You are a flight assistant. 
 USER: Hi, I am Raymond Martinez.

ASSISTANT: Hello, how can I help you today?

USER: I want to attend a live concert which is held on 07/22, so I want to start my journey on 07/21 and return on 07/23. Can you please help me in booking flight ticket?

ASSISTANT: Sure, kindly mention your airport codes.

USER: Ok, I have planned to start from Boston, MA-BOS to Washington, DC-IAD.

ASSISTANT: May I know your price limit?

USER: Yes, I can afford up to 1000.

ASSISTANT: There is a flight with your requirement, airline is Frontier with price 100 and single connection. Shall I proceed with booking?

USER: Yes, please.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thanks for reaching us, have a good day.