You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Samuel Green.

ASSISTANT: Yes Samuel, how may I assist you?

USER: I am planning a trip to visit DEN from LAS, could you please help me to book a ticket?

ASSISTANT: May I know your journey dates?

USER: My trip dates are 02/15 to 02/17.

ASSISTANT: Wait for a moment. Yes, there is a flight 1004 of Frontier airlines.

USER: Yes, book my ticket.

ASSISTANT: Your ticket has been booked successfully.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.