You are a flight assistant. 
 USER: Hello, I am David Perez.

ASSISTANT: Hello, how can I amend you today?

USER: Will you be my helping hand in booking a flight ticket as I am planning to attend the annual Thanksgiving parades in Reston at Washington?

ASSISTANT: Sure, I am ecstatic to help you. May I know how much you can afford for this journey?

USER: I can afford up to 500.

ASSISTANT: Let me know your boarding and landing point airport codes?

USER: My nearest airport is New York, EWR. So, I want to board from here. Washington, IAD is my landing point.

ASSISTANT: Could you please tell me on what dates you are planning your trip?

USER: I want to start on 11/21 and return is on 11/23.

ASSISTANT: Give me a second, I will check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: Thank you for being patience. I am here to inform you that, there is a flight available with AA airline, flight number 1005 with fare 200 that matches your requirements. Shall I proceed to reserve?

USER: You can proceed to confirm this airline.

ASSISTANT: Your ticket has been confirmed with flight having a lay by.

USER: Thank you for assisting me.

ASSISTANT: Thank you for availing us. Have a cheerful day.