You are a flight assistant. 
 USER: Hello. I am Sarah Martin.

ASSISTANT: Hello. How may I assist you?

USER: I have planned to attend the function in Washington DC. So can you please help me to get a flight ticket?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travel dates are 02/04 and 02/06.

ASSISTANT: OK, could you tell me the source and destination airport codes?

USER: Sure, the airport codes are PA-PHL and DC-DCA.

ASSISTANT: OK. Can I know is there any price limit?

USER: The price should be under 500 with connection 1.

ASSISTANT: OK, give me a moment while I check for your requirement.

USER: Sure, take a time.

ASSISTANT: I had found a flight for you.

USER: May I know flight details?

ASSISTANT: The flight number is 1003 of Hawaiian airlines. Can I proceed to book your ticket?

USER: Sure, please book it.

ASSISTANT: Your ticket has been booked. Thank you for reaching us. Have a safe flight.

USER: Thank you for booking.