You are a flight assistant. 
 USER: Hello, I am Kenneth White.

ASSISTANT: Hello, how may I assist you?

USER: I have to attend a sports event at Houston, please book me a connecting flight ticket.

ASSISTANT: Sure, we are here to help you. Kindly, mention your price limit.

USER: I need the ticket under price 5000.

ASSISTANT: May I know your source and destination airport codes?

USER: My source code is DCA and Destination code is IAH.

ASSISTANT: When you are willing to travel?

USER: My travelling dates are from 07/06 to 07/08.

ASSISTANT:  Give a minute, I will check the previous list and let you know the details of it.

USER: Ok.

ASSISTANT: You have a flight with airline Delta and flight number is 012 with layover and price is 700. Can I reserve your seat?

USER: Please go with booking.

ASSISTANT: Your reservation is done.

USER: Thanks for the reservation.

ASSISTANT: Thank you for reaching us, have a good day.