You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mark Lopez.

ASSISTANT: How may I aid you?

USER: I am planning to visit Olympic national Park at Washington, could you please help me with booking a flight ticket from BOS to IAD?

ASSISTANT: Sure, I am ready to help you. Would you please provide me your travelling dates?

USER: I would like to depart on Aug 06th and return on Aug 08th.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight in normal-cost.

ASSISTANT: According to your information, there is a flight with 1 connection in Delta airlines and price is 100. Shall I proceed?

USER: Yes, please confirm the booking.

ASSISTANT: Ok, your ticket is reserved with the flight 1002.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for consulting us.