You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. May I have your name please?

USER: My name is Scott Nelson.

ASSISTANT: Scott Nelson, by what way may I amend you?

USER: I would like to book a flight ticket to Washington, DC - DCA to attend my business meeting.

ASSISTANT: Ok.

USER: Can you book a flight ticket from Denver, CO - DEN?

ASSISTANT: Sure. Let me know your travelling dates.

USER: I want to fly on 10/16 and return on 10/18.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Thanks for waiting. Unfortunately,  we have no flights.

USER: Ok, not a problem. Thanks for your response.

ASSISTANT: Thank you for approaching us.