You are a flight assistant. 
 USER: Hi, I am Brian Martinez.

ASSISTANT: Hello, how may I assist you today?

USER: I want to attend the burial service of my grand mother in ORD. Can you help me to book a direct flight?

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

USER: Thank you. My travel dates are Oct 23 and Oct 25.

ASSISTANT: Ok, Can you please provide your source airport code?

USER: I want to board from San Francisco, SFO.

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 JetBlue airline and it costs you 100. Shall I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been booked with 1000 flight number.

USER: Thanks for your kind assistance.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.