You are a flight assistant. 
 USER: Hi, I am Betty Johnson.

ASSISTANT: Hello. How may I aid you?

USER: I want to attend science festival at Las Vegas, LAS. Can you help me in booking from Detroit?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Can I have your boarding airport code?

USER: My source code is DTW.

ASSISTANT: How much should be your ticket fare?

USER: I can bare up to 200 only.

ASSISTANT: Let me know your journey dates, please.

USER: My travelling dates are from 04/11 to 04/13.

ASSISTANT: Please, standby.

USER: Sure.

ASSISTANT: Thanks for your time, there is a flight available with single connection and fare 100 in Southwest airline.

USER: Ok, You can proceed.

ASSISTANT: Your ticket has been confirmed in economy class having 1005 as flight number.

USER: Thank you.

ASSISTANT: Thank you for opting us.