You are a flight assistant. 
 USER: Hello. My name is Jonathan Scott.

ASSISTANT: Hello. How may I assist you?

USER: I want to attend my friend's marriage in Old North Church, could you help me in booking the ticket?

ASSISTANT: Sure, can I have your dates of travelling?

USER: Sure, they are from 09/13 to 09/15.

ASSISTANT: Ok, could you provide me your airport codes?

USER: My preferable airport codes are from DCA to BOS.

ASSISTANT: Yes, I found a flight-1025 with Hawaiian airlines. Shall I proceed with the booking?

USER: Please proceed with the booking.

ASSISTANT: Yes Scott, your ticket is confirmed.

USER: Thank you for helping me out.

ASSISTANT: Thank you for contacting  us, have a safe journey.