You are a flight assistant. 
 USER: Hello, my name is Alexander Smith.

ASSISTANT: Hello, how may I assist you Alexander?

USER: I am looking for a direct flight from DEN to ORD, please help me in booking a ticket.

ASSISTANT: Sure Smith, may I know your journey dates please?

USER: My journey dates are 11/23 and 11/25.

ASSISTANT: Smith, please wait for a minute.

USER: Sure.

ASSISTANT: I found a flight with Frontier airlines available with price 200. Shall I book the ticket?

USER: Ok, please book my ticket.

ASSISTANT: Your ticket is confirmed and the flight number is 1027.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us, have a good day.