You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to meet my grand parents at San Francisco, please help me in booking a ticket.

ASSISTANT: Sure, can you please share your planned dates to travel?

USER: Sure, my planned dates are 01/03 and 01/05.

ASSISTANT: May I know your source and destination airport codes please?

USER: My airport codes are PHL and SFO.

ASSISTANT: May I know your good name please?

USER: My name is Virginia Green.

ASSISTANT: There is a flight available on your requested dates from Delta airlines with 1 connecting flight. Shall I confirm your booking?

USER: Ok, please book my ticket.

ASSISTANT: Your ticket is booked with flight 1009.

USER: Thank you for your quick response.

ASSISTANT: Thank you for your assistance.