You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nancy Parker.

ASSISTANT: How can I assist you today?

USER: I would like to visit Washington to meet my colleague, can you please help me to book a flight ticket from PHL to DCA?

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: Sure, my journey dates are Apr 12 and Apr 14.

ASSISTANT: Do you have any other specifications?

USER: I am looking for a single connection flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: American airlines is providing a flight on that route with ticket fare of 100 and 1 connection, shall I proceed for booking?

USER: Ok, please confirm my ticket.

ASSISTANT: I have successfully booked you an economy class ticket in flight-1003, have a safe journey.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.