You are a flight assistant. 
 USER: Hi. I am Rebecca Harris.

ASSISTANT: Hello, how may I assist you?

USER: I need your assistance in booking a flight ticket from PHL to DTW airports.

ASSISTANT: Sure, please let me know your budget for this booking.

USER: My budget is 5000 for the ticket.

ASSISTANT: On what dates will you be travelling?

USER: 06/05 and 06/07 are my travelling dates.

ASSISTANT: Ok, there is a flight matching your credentials.

USER: Please brief me about the flight details.

ASSISTANT: Southwest airline with flight number 1005 and the cost of ticket is 200.  Is that okay for you?

USER: Yes, I am ok with that.

ASSISTANT: Your request for booking has been processed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.