You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: My name is Mary Allen, I want to book a flight from Las Vegas, NV-LAS to attend a meeting at Dallas. Can you book a connecting flight for me?

ASSISTANT: Sure, may I know your when are you willing to travel?

USER: I will fly on 10/12 and return on 10/14.

ASSISTANT: Please help me with your source airport code.

USER: My destination airport code is Dallas, TX-DFW.

ASSISTANT: Please wait while I check for available flight  for your trip.

USER: Sure.

ASSISTANT: We have found a flight from Frontier airline number 1020 and the price is 100. Shall I proceed?

USER: Please proceed with booking.

ASSISTANT: Your booking is done.

USER: Thank you for helping me with booking.

ASSISTANT: Thank you for opting us.