You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: My name is Eric Hernandez. I want to book a flight ticket with a price limit of 5000 for attending a client meeting in Denver.

ASSISTANT: Sure, please provide your travelling days?

USER: My departure day is 08/22, return day is 08/24.

ASSISTANT: May I know your travelling airport codes?

USER: My source and destination airport codes are DC-IAD, CO-DEN.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Thank you for your information. We found a flight. Shall I proceed?

USER: May I know the flight details?

ASSISTANT: Flight 1004 with price limit 100. It si single connection flight.

USER: You can proceed to booking.

ASSISTANT: Your booking has been done. Thank you.

USER: Thanks for your service.