You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Frank Thompson.

ASSISTANT: How may I serve you today?

USER: I want a flight ticket under the range of 500. Can you help me with booking on 12/19?

ASSISTANT: Sure, may I know your airport codes and other journey date?

USER: I want to attend my brothers press conference at LAX from DFW. I will be return on 12/21.

ASSISTANT: Please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Airline: Frontier and flight number:1015 with price 200. And single connection.

USER: Ok, You can proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your service.

ASSISTANT: Thank you for choosing us.