You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Donna Nelson.

ASSISTANT: How may I be your helping hand today?

USER: Can you help me out in booking a ticket with price limit 500?

ASSISTANT: Sure, do you have any connection limit?

USER: I need a single connection in my journey.

ASSISTANT: May I know when you want to travel?

USER: I would like to go for Korean War Veterans Memorial at Washington, my journey dates are from 06/04 to 06/06.

ASSISTANT: Kindly, provide me your airport abbreviates?

USER: My airport codes are from CLT to IAD.

ASSISTANT: Thank you for the details.

USER: Ok.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Thank you for being patience, I found a flight with the number 1023 and Southwest airline. Shall I proceed?

USER: Yes, you can proceed booking.

ASSISTANT: Your flight ticket has been booked with the fare of 400.

USER: Thank you for quick response.

ASSISTANT: Thank you for opting us.