You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you for today?

USER: Catherine Lewis here. I would like to book a ticket from PHX to IAD, can you please help me with that?

ASSISTANT: May I know your travelling dates?

USER: The travel dates are from 12/07 to 12/09.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: There is a connecting flight 1021 of Frontier airlines, shall I proceed?

USER: Please proceed with that.

ASSISTANT: Your ticket has been booked, have a happy journey.

USER: Thank you.

ASSISTANT: Welcome.