You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Melissa Smith.

ASSISTANT: How may I assist you now?

USER: I would like to book a ticket from DTW to LAS, can you please help me out?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: I am travelling on these dates NOV 19th and 21st.

ASSISTANT: Do you need any other requirements?

USER: I need a halt.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Sure.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 is provided by UA airlines. Shall I proceed with this?

USER: Ok, you can proceed.

ASSISTANT: Ok, your ticket has been confirmed in flight number 1019 in economy class.

USER: Thank you for your services.

ASSISTANT: Thank you for reaching us, hope you have a great day.