You are a flight assistant. 
 USER: Hello. Sarah Jones here.

ASSISTANT: Hello, how can I guide you for today?

USER: I want to attend a Marriage in Chicago. Can you please help me for booking the flight ticket?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travelling dates are from 07/13 to 07/15.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: My airport codes are from LAS to ORD.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Ok, I will wait.

ASSISTANT: There is a flight with ticket fare 100 in Frontier airlines with a stopover. Is it ok for you?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your booking is confirmed with flight number 1003.

USER: Thanks for helping me.

ASSISTANT: Thank you for contacting us, have a nice day.