You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I would like to fly on 02/03 to 02/05, so I need to book a flight ticket with a halt.

ASSISTANT: Sure, may I know your travelling airport codes?

USER: Sure, my travelling airport codes are NV - LAS to MA - BOS.

ASSISTANT: May I know your name?

USER: Sure, my name is Mary Baker.

ASSISTANT: Please mention your price range.

USER: My price range is 500.

ASSISTANT: There is a Delta 1003 airline with fare of 200 which matches your travelling dates. Shall I proceed with booking?

USER: Ok, book my ticket.

ASSISTANT: Your booking has been completed.

USER: Thank you so much.

ASSISTANT: Thank you for approaching us.