You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you help me to book a flight ticket from DCA to SEA?

ASSISTANT: Sure, may I know your trip dates?

USER: Ok, please can I know if you can provide me the flight on the dates July 15 and 17?

ASSISTANT: Do you have any connection limit preference?

USER: Ok, please book a direct flight.

ASSISTANT: Do you have any other specifications?

USER: yes, can you book a economy class flight?

ASSISTANT: Could you help me with your name please?

USER: My name is Steven Johnson.

ASSISTANT: I found a connecting flight with Spirit Airlines and the airfare is about 100. Shall I proceed with flight 1001?

USER: Ok, please book.

ASSISTANT: For a economy class your ticket is booked.

USER: That is good, thank you for assisting me.

ASSISTANT: Thank you for reaching us.