You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you aid me to book a flight ticket from DCA to SFO?

ASSISTANT: Sure, please share me your trip dates.

USER: My trip dates are Sep 3 and Sep 5 respectively.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight to travel.

ASSISTANT:  If you can help me with your name, I can begin looking up for the availability of flights.

USER: Rachel Martin here.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: No preferences for me.

ASSISTANT: Thank you for waiting and we have found a flight in an economy class with 1 connection in Delta airlines and the fare of your flight will be 100. Do you like me to proceed your booking with this flight?

USER: Please proceed.

ASSISTANT: Your ticket has been reserved with flight number 1016.

USER: Thank you.

ASSISTANT: Thank you for availing us.