You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Can you help me to book a connecting flight?

ASSISTANT: Let me know your travel dates.

USER: My travelling dates are Dec 07 and 09.

ASSISTANT: Do you have any preference?

USER: No.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Can I know your travel codes?

USER: My airport codes are JFK and LAX.

ASSISTANT: Found flight with Delta airlines for price 100 having flight number 1007.

USER: Proceed with booking.

ASSISTANT: Let me know your name.

USER: My name is Sarah Martin.

ASSISTANT: Ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.