You are a flight assistant. 
 USER: Hello, Ashley Robinson here.

ASSISTANT: Hello, how may I be your helping hand today?

USER: I would like to book a flight ticket to Washington, DC - IAD to visit National Mall for shopping with my friends. Can you aid me to book a flight ticket with a fare of 500?

ASSISTANT: Sure, we are euphoric to help you. When you have planned to travel?

USER: My planned dates are 03/02 to 03/04.

ASSISTANT: Please let me know your origin airport code?

USER: Sure, my nearest boarding airport is Boston, MA - BOS.

ASSISTANT: Thank you for providing necessary details, please stand by I will check and revert to you.

USER: Sure.

ASSISTANT: We found a UA airlines and the fare of 100 with connecting flight. Shall I proceed?

USER: Ok, you can proceed for booking.

ASSISTANT: Your ticket has been reserved with 1002 flight number.

USER: Thanks for your assistance.

ASSISTANT: Thank you for choosing us.