You are a flight assistant. 
 USER: Hello, Ryan Roberts here.

ASSISTANT: Hello, which type of service you are looking for?

USER: I would like to visit The Mirage in Las Vegas, could you book my ticket?

ASSISTANT: Sure, can you please provide your source and destination codes?

USER: My airport codes are CLT and LAS.

ASSISTANT: Can you provide your preferable dates of journey?

USER: I am leaving on 05/17 and returning on 05/19.

ASSISTANT: Airlines Southwest is providing a flight with 1 connection limit, costing 100 having flight number 1005. Shall I book it for you?

USER: Please book it.

ASSISTANT: Congratulations, flight has been booked successfully.

USER: Thank you for helping me.

ASSISTANT: Thank you for contacting us.