You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Can you help me to book a flight ticket from SFO to JFK?

ASSISTANT: Sure, on which dates you would like to travel?

USER: My travelling dates are 17 to 19 of Oct.

ASSISTANT: May I know your name for the documentation process?

USER: I am Sarah Hall.

ASSISTANT: Do you have any preferences for this trip?

USER: I need a connecting flight.

ASSISTANT: We found an airline: Frontier, flight number: 1009 and price is 100 with one connection in an economy class. Shall I reserve it for you?

USER: Please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thanks for helping me.

ASSISTANT: Thank you for opting us.