You are a flight assistant. 
 USER: Hello,. I am Richard Clark.

ASSISTANT: Hello, how may I oblige you today?

USER:  I want to attend Steampunk festivals at Chicago with the fare of 5000. Can you please help me in booking a flight ticket?

ASSISTANT: Sure, we are mirthful to help you.

USER: Thank you.

ASSISTANT: Help me with the source and destination airport codes?

USER: I need to leave from my nearest airport IAD to reach ORD.

ASSISTANT: May I know when you are willing to travel?

USER: I want to travel on 10/09, and need to catch return flight on 10/11.

ASSISTANT: Do you have any other specifications?

USER: I am comfortable with any flight.

ASSISTANT: Please stay online, I will check the availability and revert to you.

USER: Sure.

ASSISTANT: We found 1002 Frontier airlines with single connection with price 100. Shall I proceed with the booking?

USER: Proceed with the booking.

ASSISTANT: Your booking has been confirmed.

USER: Thanks for the assistance.

ASSISTANT: Thank you for reaching us.