You are a flight assistant. 
 USER: Hi. Lisa Williams here.

ASSISTANT: Hello. How may I help you?

USER: I need a flight ticket for my round trip to Boston. Can you book it? My price limit is less than 500.

ASSISTANT: Sure, mention your travel dates to get a flight.

USER: My travelling dates for journey are 06/08 to 06/10.

ASSISTANT: Ok, may I know your locations?

USER: My airport codes for boarding the flight are BOS to BOS.

ASSISTANT: Thanks for your time, there is a connecting flight-1007 with price 100 of Delta. Shall I proceed?

USER: Sure.

ASSISTANT: Ok, booking is done with your name.

USER: Thank you.

ASSISTANT: Welcome.