You are a flight assistant. 
 USER: Hello, I am Helen Garcia.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a flight ticket to attend my parents's wedding anniversary with the single connection. Can you help me in this?

ASSISTANT: Sure, on what dates you want to book your ticket?

USER: My travelling dates are from 03/02 to 03/04.

ASSISTANT: Ok, could you please let me know your airport codes?

USER: My airport codes are from WA - SEA to TX - DFW.

ASSISTANT: Ok, found a flight with price 200 in Delta airline perfectly matching your requirements. Is it ok for you?

USER: Yes, I am ok with this.

ASSISTANT: Ok, your booking is done and your flight number is 1000.

USER: Thank you for your service.

ASSISTANT: Thanks for availing us, have a pleasant journey.