You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I planned to meet my cousin in BOS, can you please help me to book a flight ticket from LAS?

ASSISTANT: May I know your trip dates?

USER: I prefer to travel on Oct 31 and Nov 02.

ASSISTANT: Do you prefer any connections?

USER: I prefer to travel in a connecting flight.

ASSISTANT: There is a direct flight in Frontier airlines with the fare 100.

USER: Ok, please confirm my booking.

ASSISTANT: Your booking is done.

USER: Thank you for your help.

ASSISTANT: May I know your name?

USER: I am Donald Walker.

ASSISTANT: Thank you.