You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Lisa Williams.

ASSISTANT: What guidance you are expecting from our flight ticket booking agency?

USER: I want to book a flight ticket on these days that is 07/16 and back on 07/18. Can you help me?

ASSISTANT: Sure, can you please tell me your travel airport codes?

USER: Sure, I am planning to travel from DEN which is round trip.

ASSISTANT: Ok, please hold on for a while. So that, I can find the flight with your details.

USER: Sure.

ASSISTANT: Ok, I have found a flight for you in the airlines Hawaiian which is halting at another airport and the ticket cost is 100. Can I proceed with ticket booking?

USER: Ok, you can reserve the flight ticket happily.

ASSISTANT: Sure, I have booked your ticket with the flight number 1027.

USER: Thank you for your service.

ASSISTANT: You are welcome. Thank you for contacting with us.