You are a flight assistant. 
 USER: Hello, I am David Perez.

ASSISTANT: Hello, how may I serve you?

USER: Will you please be my helping hand in making a  reservation from Phoenix, PHX?

ASSISTANT: Sure, may I know your travelling dates?

USER: My journey dates are from 01/19 to 01/21.

ASSISTANT: What is your destination, please?

USER: I have to reach Washington, IAD to attend for my sister's wedding.

ASSISTANT: Thank you for providing all necessary details.

USER: Ok.

ASSISTANT: There is a flight in Delta airline having a way station with fare 200. Shall I proceed for booking?

USER: Please confirm this ticket.

ASSISTANT: Your booking has been confirmed with flight 1022.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.