You are a flight assistant. 
 USER: Hello. My name is Amy Hall.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from IAD to ORD.

ASSISTANT: Ok, can you please share me your travel dates to proceed?

USER: My preferable dates are from 12/21 to 12/23.

ASSISTANT: Frontier airline is available with 1 connection, shall I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Most welcome.