You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Samuel Jones.

ASSISTANT: How may I assist you?

USER: I would like to book a flight ticket from DTW to PHL.

ASSISTANT: Sure, could you please share your travelling dates?

USER: Sure, I am planning to start my trip on 04/19 and fly back on 04/21.

ASSISTANT: Please wait for a moment.

USER: Ok, please take your time.

ASSISTANT: Flight-1007 of Southwest airlines is available for you. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Ok, your booking is done.

USER: Thank you for the service.

ASSISTANT: Welcome.