You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Gregory White here.

ASSISTANT: How may I help you?

USER: I would like to attend a business seminar in Boston, can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure, I will help you out.

USER: Thank you.

ASSISTANT: May I know your travelling dates?

USER: Sure, I am planning to go on 06/19 and please book my return ticket on 06/21.

ASSISTANT: Can I know your airport codes please?

USER: I want to travel from CLT to BOS.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your time.

ASSISTANT: There is a flight with flight number 1001, can I proceed with this flight?

USER: That's fine, you can proceed with booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your help, have a nice day.

ASSISTANT: Thank you for approaching us.

USER: Welcome.