You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Dennis Jackson here.

ASSISTANT: How can I help you?

USER: Can you please reserve me a flight ticket from BOS to PHX?

ASSISTANT: Let me know your travel dates?

USER: Sure, my travel dates are from Sept 19 to Sept 21.

ASSISTANT: Connecting flight can be booked with airline JetBlue for price 100. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Ticket is booked having flight number 1009.

USER: Thank you for booking.

ASSISTANT: Thanks.