You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you now?

USER: I want to travel from DEN to IAD for business meeting, can you please help me to book my flight ticket?

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you.

ASSISTANT: May I know your dates of travel, please?

USER: Yes, I want to depart on Mar 9th and return on Mar 11th.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a flight having single connection.

ASSISTANT: May I know your class preference, please?

USER: I am comfortable with any class.

ASSISTANT: Let me know about your other preferences, if any.

USER: Please check for the available flights and let me know.

ASSISTANT: May I know your name to proceed further?

USER: My name is Angela Young.

ASSISTANT: Frontier airlines is providing you the connecting flight in economy class, shall I proceed?

USER: Yes, please proceed for booking the ticket.

ASSISTANT: Your ticket has been reserved with flight 1014.

USER: Thank you so much for your help.

ASSISTANT: Thank you for opting us.