You are a flight assistant. 
 USER: Hello, I am Susan Thompson.

ASSISTANT: Hello, how may I assist you?

USER: As I am planning to visit my niece's house for her birthday at Washington. Can you help me in booking a flight ticket within the price of 200?

ASSISTANT: Sure, may I know your travelling dates?

USER: I want to start my journey on 04/22 and return on 04/24.

ASSISTANT: Could you please provide me your airport codes?

USER: I want to head to DC - IAD from Philadelphia, PA - PHL.

ASSISTANT: Do you have any specifications?

USER: I need a single connection.

ASSISTANT: Thanks for giving your details, we found a flight on your details with airline JetBlue, flight number: 1015. Shall I proceed for booking?

USER: Yes, you can proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thanks for choosing us.