You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Elizabeth Green here, I want to travel from IAD to PHX, can you please help me to reserve my ticket?

ASSISTANT: Sure, can you help me with your travelling dates?

USER: Ok, my dates of journey is from 03/21 to 03/23.

ASSISTANT: There is a flight-1019 of Hawaiian airlines is available for you,. Shall I proceed?

USER: Please proceed with this booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your help in booking a ticket.

ASSISTANT: Welcome.