You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

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

ASSISTANT: Sure, may I know your travelling dates?

USER: I am travelling on these dates Sept 6th and 8th.

ASSISTANT: Do you have any connection limit?

USER: I need single connected flight.

ASSISTANT: Any other preferences?

USER: I prefer economy class.

ASSISTANT: May I know your name?

USER: Christine Hernandez here.

ASSISTANT: You have a connecting flight 1021 in Spirit airlines and price 200 in economy class, Shall I proceed?

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your services.

ASSISTANT: Thank you.