You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Rachel Smith. I have to attend a Live Concert at Seattle, could you please help me with booking a flight ticket from IAD to SEA?

ASSISTANT: Ok, may I know your travelling dates?

USER: I would like to take off on 02/27 and return on 02/29.

ASSISTANT:  Here is a connecting flight with fare 100 and 1019 as flight number. Shall I proceed with booking?

USER: Yes, please confirm the booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Most welcome.