You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to go to Los Angeles, my children is there for completing his MS, I want to see him, so can you please book a flight ticket for ?

ASSISTANT: Sure, please provide the flight details.

USER: I will go on 10/31 and return on 11/02. My airport codes are from IAD to LAX.

ASSISTANT: Ok, please wait for a moment.

USER: Ok, take your time.

ASSISTANT: I found a flight, with price 200 and one connection.

USER: That's great.

ASSISTANT: Spirit airlines, 1002 flight number.

USER: Please proceed with that flight.

ASSISTANT: Sure. Your flight reservation is confirmed.

USER: Thank you for your service.

ASSISTANT: Thanks for choosing our airlines.