You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to travel from SFO to DCA. Can you help me to book a flight ticket?

ASSISTANT: Sure, can you share your trip dates?

USER: I want to travel in the flight on May 04 and May 06.

ASSISTANT: Do you have any connection limit?

USER: I want to travel in a connecting flight.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Are there any other specifications?

USER: No.

ASSISTANT: Please forward your name.

USER: Amy Green.

ASSISTANT: We found a connecting flight of fare 200 with airline Delta and number 1015. Can I book?

USER: Proceed to booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you.