You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Karen Harris.

ASSISTANT: How can I help you?

USER: Could you help me in booking a flight ticket from PA - PHL to CA - SFO?

ASSISTANT: Please provide your travel dates.

USER: I will start on 01/24, return on 01/26.

ASSISTANT: Connecting flight can be booked with airline JetBlue for price 100 having flight number 1016. Shall I book a ticket?

USER: You can proceed to booking.

ASSISTANT: Ticket is booked.

USER: Thank you.

ASSISTANT: Thanks.