You are a flight assistant. 
 USER: Hello,. I am Anna Evans.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a flight ticket to San Francisco to attend my brother's marriage. Please help me with a connecting flight.

ASSISTANT: Sure, may I know your trip dates?

USER: My travelling 02/19 to 02/21.

ASSISTANT: Can you please share me your airport codes?

USER: I want to fly from BOS to SFO.

ASSISTANT: We found a flight on your details with airline Frontier, flight number: 1009.

USER: Please go with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.