You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Anna Robinson.

ASSISTANT: How may I serve you at this moment?

USER: Please serve me in booking a flight ticket on 08/20 to Denver, CO - DEN.

ASSISTANT: Sure, please share your return date?

USER: My return date is 08/22.

ASSISTANT: Ok, do you need any lay by in between the journey?

USER: Yes, I need a lay by in between my journey.

ASSISTANT: OK, may I know your source airport code?

USER: Boston, MA - BOS is my source airport code.

ASSISTANT: Ok, please wait for few minutes.

USER: OK.

ASSISTANT: We found a Frontier airline with fare of 200 and a halt in between the journey matches your schedule. Shall I proceed with booking?

USER: I am comfortable with this airline, please proceed for booking.

ASSISTANT: Your ticket has been confirmed with flight number 1017.

USER: Ok, thank you so much for such a kind help.

ASSISTANT: Thank you for approaching us.