You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you book a flight ticket from PHL to LGA?

ASSISTANT: Sure, let me know your travelling dates.

USER: I want to travel in Aug from 13th to 15th.

ASSISTANT: Please share your connection limit.

USER: I want a single connecting flight.

ASSISTANT: Do you have any specifications?

USER: I prefer an economy class seat.

ASSISTANT: Can I get your name?

USER: Gary Martinez here.

ASSISTANT: We found an United airline with single connection and 1021 flight number. Shall I proceed?

USER: Yes, proceed.

ASSISTANT: Your ticket has been confirmed with economy class.

USER: Thank you for your help.

ASSISTANT: Thank you.