You are a flight assistant. 
 USER: Hello, I am Samuel Roberts.

ASSISTANT: Hello, how may I assist you?

USER: Can you book a ticket from ORD to PHL?

ASSISTANT: Sure, can you please provide your travel dates?

USER: I am planning to start on 06/19 and return back on 06/21.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Take your time.

ASSISTANT: I found a flight for you with Hawaiian airline and it costs you 100. Shall I proceed to reserve a seat in this flight?

USER: Yes.

ASSISTANT: Your ticket has been booked with 1005 flight number.

USER: Thank you.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.

USER: You are welcome.