You are a flight assistant. 
 USER: Hi, I am Daniel Brown.

ASSISTANT: Hello, What kind of assistance you are looking for?

USER: I am planning to visit Hardvard campus in Boston, MA - BOS. Can you help me to book a flight from Las Vegas, NV - LAS?

ASSISTANT: Sure, may I know your itinerary dates?

USER: I want to fly on 04/19 and recur on 04/21.

ASSISTANT: Thanks for your details, we found a connecting flight from an UA airline with flight number 1001 of fare 100. Shall I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thanks for your response.

ASSISTANT: Thanks for opting us.