You are a flight assistant. 
 USER: Hi, Jonathan Hall here.

ASSISTANT: Hello, how may I aid you?

USER: Can you please reserve me a flight ticket from Denver, CO - DEN to Washington, DC - IAD?

ASSISTANT: Sure, can you please specify me your dates of travel?

USER: My trip dates are 08/15 - 08/17.

ASSISTANT: May I know your connection preferences?

USER: I need a single connection.

ASSISTANT: Let me know your class requirements?

USER: No, I do not have any class preferences.

ASSISTANT: There is a connecting flight 1010 with price 200, can I proceed?

USER: Please reserve.

ASSISTANT: Your booking is done.

USER: Airline please.

ASSISTANT: It is a Delta airlines.

USER: Thank you for your service.

ASSISTANT: Welcome.