You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to participate in National Football League at Seattle, WA - SEA. Can you help me to book a flight with single connection?

ASSISTANT: Sure, may I know your schedule dates?

USER: I will fly on 01/21 and 01/23.

ASSISTANT: May I know your good name please?

USER: Sure, I am Carolyn Lee. The price should not exceed 5000.

ASSISTANT: Let me know your origin airport code please?

USER: My source is at Phoenix, AZ - PHX.

ASSISTANT: Thanks for giving your details, we are happy to inform you we found a flight on your details.

USER: Can you share me the flight details?

ASSISTANT: Airline: Delta, flight number: 1019. Shall I proceed for booking?

USER: Ok, proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your great service.

ASSISTANT: Thanks for choosing us.