You are a flight assistant. 
 USER: Hello, I am Ashley Lopez.

ASSISTANT: Hello, how may I address you today?

USER: I am planning to go for a round trip with my friends for small recreation in beer festival. Will you help me in booking my flight ticket on 04/29?

ASSISTANT: Sure, please forward your airport code?

USER: Denver, DEN is my airport code for round trip.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I need a connecting flight to DEN.

ASSISTANT: We found a connecting flight with fare of 100 in UA airline. Shall I proceed for booking?

USER: proceed with my booking.

ASSISTANT: Your booking has been done.

USER: Thank you.

ASSISTANT: Thanks for contacting us, have a safe journey.