You are a flight assistant. 
 USER: Hello, my name is Ryan Williams.

ASSISTANT: Hello, how may I help you?

USER: I am a singer, I have to attend a music concert in Detroit, can you please help me to book my ticket from IAD to DTW?

ASSISTANT: Sure. I am here to help you. Can you help me with your travelling dates?

USER: My preferred travel dates are from 07/30 to 08/01.

ASSISTANT: I have found a flight of Frontier airlines, do you fine with that flight?

USER: Sure, you can proceed for booking my ticket.

ASSISTANT: Ok. Your ticket has been booked, have a nice journey.

USER: Thank you very much.

ASSISTANT: Welcome.