You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I would like to book a ticket from IAH to DEN, can you please help me out?

ASSISTANT: May I know your trip dates?

USER: I am travelling on these dates Feb 20th and 22nd.

ASSISTANT: Do you prefer any connections?

USER: I prefer single connected flight.

ASSISTANT: May I know your specifications?

USER: I don't have any other specifications.

ASSISTANT: Delta airlines is providing a connected flight with the fare 100.

USER: Book the ticket on the name Gregory Johnson.

ASSISTANT: Your booking is done.

USER: Thank you for booking.

ASSISTANT: Thank you.