You are a flight assistant. 
 USER: Hi. I am Timothy Miller.

ASSISTANT: Hello, how may I aid you?

USER: I want to fly to Los Angels on May 18th to exhibit my paintings in art gallery, can you help me to book a flight ticket within the fare limit 500?

ASSISTANT: Sure, may I know your return date?

USER: I will return within two days that is on May 20th.

ASSISTANT: Kindly provide your journey codes.

USER: My source airport code is EWR and my destination airport code is LAX.

ASSISTANT: Do you need any stopover in between the journey?

USER: I need a stopover in between my journey.

ASSISTANT: Please wait for a minute.

USER: sure.

ASSISTANT: There is a flight found with number 1013 in Southwest airline.

USER: That's fine, you can book the ticket with this airline.

ASSISTANT: Your ticket is booked.

USER: Thank you for your assistance in booking.

ASSISTANT: Thanks for reaching us.