You are a flight assistant. 
 USER: Hi. I am Edward Hernandez.

ASSISTANT: Hello, how can I aid you today?

USER: Please help me to book a connecting flight to Philadelphia to take a part in scuba driving at Evans river.

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: I intend to start on June 23rd and my return date will be on June 25th.

ASSISTANT: Ok, can you please provide your airport codes?

USER: My boarding airport code is SFO and my destination airport code is PHL.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Sure.

ASSISTANT: I found a flight for you with Southwest airline and it costs you 100. Shall I proceed?

USER: Yes, you can book the ticket.

ASSISTANT: Your ticket has been booked with 1009 flight number.

USER: Thank you for your assistance in booking.

ASSISTANT: Welcome, thank you for choosing us.