You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Andrew Hernandez want to visit IAD, can you book a ticket from LAX?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Sure, my travelling dates will be 07/30 and 08/01.

ASSISTANT: Do you have any requirements?

USER: Yes, my flight price should be within 200.

ASSISTANT: Flight with 1 connection from Spirit airlines is available for you, can I proceed?

USER: Ok, proceed with my booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Welcome.