You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Andrew Phillips here.

ASSISTANT: Yes, Andrew.

USER: I would like to book a ticket from DTW to LAS.

ASSISTANT: Ok. So, you want to book a flight ticket?

USER: Yes.

ASSISTANT: May I know on which date you want to fly?

USER: The travel dates are from 08/20 to 08/22.

ASSISTANT: Andrew, Let me check what flights are available.

USER: Ok.

ASSISTANT: I found a flight from Frontier airline with flight number 1021 is available for you. Shall I proceed to book?

USER: Yes, you can proceed.

ASSISTANT: Your ticket has successfully booked.Have a safe journey.

USER: Thank you for your help.

ASSISTANT: It's our pleasure. Thank you for contacting us. Have a good day.