You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Christopher Roberts.

ASSISTANT: How can I hep you for the day?

USER: Can you please help me to reserve a flight ticket from Denver-DEN on Oct-15th?

ASSISTANT: Sure, I am here to help you with this.

USER: Thank you for considering my request.

ASSISTANT: May I know your travelling dates, please?

USER: I want to return back from New York-EWR on the date of OCT-17.

ASSISTANT: Do you have any other specifications?

USER: Yes, I am looking for a single connecting flight.

ASSISTANT: There is a connecting flight-1000 in American Airlines with a fare of 100. Can I book it?

USER: I am fine with this flight, please proceed to reserve the flight ticket.

ASSISTANT: Your booking is confirmed in economy class.

USER: Thanks a lot for your help in reserving the flight ticket.

ASSISTANT: Thank you for reaching us, have a safe journey.

USER: You are most welcome.