You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Robert Campbell.

ASSISTANT: How can I help you?

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

ASSISTANT: Let me know your travel dates.

USER: I prefer to travel on Mar 12 and Mar 14.

ASSISTANT: Do you have any preference?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Ticket is found with United airlines for price 100 having flight number 1003.

USER: Ok, please confirm my booking.

ASSISTANT: Ticket is booked. Thank you.

USER: Thank you for your help.