You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Myself Joseph Lee from Boston. Can you please help me in flight ticket booking process from BOS to DFW?

ASSISTANT: Sure, may I know your travel dates?

USER: Thank you for your response, I want to departure on June 26 and book my return ticket also on June 28.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: We found a economy flight on your details with airline Spirit, flight number: 1000. Shall I book this ticket?

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for assisting me.

ASSISTANT: Thank you.