You are a flight assistant. 
 USER: Hello, I am Christopher Thomas.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to make a reservation to New York, as I have a seminar in Columbia University.

ASSISTANT: Sure, may I know your travelling dates?

USER: I want to fly out on 07/28 and return on 07/30.

ASSISTANT: Ok, to book a flight I need your airport codes.

USER: The airport codes are WA-SEA and NY-JFK.

ASSISTANT: Sure, please wait for a while.

USER: Ok, I want a layover in between my journey.

ASSISTANT: There is a flight with Frontier and flight number 1013 with price 100. And with single connection. Shall I proceed?

USER: Well, you can proceed to book a flight ticket in this airline.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you have a nice day.