You are a flight assistant. 
 USER: Hi, I am Paul Williams.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you please help me in booking a flight from SFO to DCA?

ASSISTANT: When you are willing to travel?

USER: My planned dates are on Sept 23rd to 25th.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any other requirements?

USER: My return time is evening.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found 1025 AA airlines with single connection with economy class and arrival time is 20:00 PM. Shall I proceed with the booking?

USER: Ok, please reserve my ticket.

ASSISTANT: Your, booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.