You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Kevin Wilson. I am planning to travel Phoenix, help me in booking a flight from Washington?

ASSISTANT: Sure, I will help you. May I know your travelling dates?

USER: My travelling dates are Sept 26 to Sept 28.

ASSISTANT: Do you have any class preference?

USER: I like to travel in Economy class.

ASSISTANT: Kindly provide your journey codes.

USER: My airport codes are DCA to PHX.

ASSISTANT: What are your depart and return timings?

USER: I prefer to return on any timings.

ASSISTANT: How much can you afford for the ticket?

USER: I can afford up to 500.

ASSISTANT: Do you need any  stopover in between the journey?

USER: I prefer to travel in single stop over.

ASSISTANT: Please give me a minute. There is a flight found with number 1005 in UA airline and the ticket price is 100. Shall I proceed?

USER: Proceed for booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for helping me.

ASSISTANT: Thanks for reaching us.