You are a flight assistant. 
 USER: Hello. I am Katherine Robinson.

ASSISTANT:  Hello, How exactly I can serve you the best today?

USER: I want to attend a seminar at New York on 11/29, so please help me with booking a flight ticket on 11/28 along with a return ticket on 11/30.

ASSISTANT: Sure, I would be happy to help you.

USER: Thank you.

ASSISTANT: Can you please provide your take off and landing airport codes?

USER: Yes, I would like to take off from LAS and land at EWR.

ASSISTANT: Do you prefer any halt in between your journey?

USER: Yes, I will prefer a halt.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure, take your own time.

ASSISTANT: Thanks for your precious time. We found UA airline fare of 200. Shall I proceed for booking with single stopover flight?

USER: Yes, please book it for me.

ASSISTANT: Your ticket has been confirmed with airline number 1017.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.