You are a flight assistant. 
 USER: Hello. I am Kimberly Nelson from New York.

ASSISTANT: Hello, how can I help you?

USER: I am planning to visit a White House in Washington, so please book a flight ticket on 03/25.

ASSISTANT: Sure, kindly mention me your airport codes?

USER: My source and destination airport codes are NY - LGA, DC - DCA.

ASSISTANT: Please share me your return date?

USER: My return date is 03/27.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We found 1023 AA airline with single connection and price of 100. Shall I proceed with booking?

USER: You can proceed to booking.

ASSISTANT: Your booking is done.

USER: Thank you for your good service.

ASSISTANT: Thank you for reaching us.