You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I aid you today?

USER: I am Jeffrey Martinez. I am planning to visit Olympic National Park at Washington, could you please help me with booking a flight ticket?

ASSISTANT: Sure, do you have any airfare limit?

USER: My price limit is 500.

ASSISTANT: Help me with the airport abbreviates?

USER: My nearest source airport code is ORD and destination airport code is IAD.

ASSISTANT: What are your planned trip dates?

USER: I would like to take off on 05/27 and return on 05/29.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, we found a flight in an airline Delta with the number 1005. Shall I proceed to book?

USER: Please proceed with the booking if the connection is 1.

ASSISTANT: Your flight ticket has been processed having a single connection.

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

ASSISTANT: Thank you for opting our service.