You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Raymond White.

ASSISTANT: How can I assist you today?

USER: I want to go for a Yosemite adventure at Washington, DC-DCA.

ASSISTANT: Ok.

USER: Can you please book me a ticket from Philadelphia, PA-PHL?

ASSISTANT: Sure, we are mirthful to aid you. May I know your budget?

USER: My budget limit is 1000.

ASSISTANT: When you are willing to travel?

USER: My travel dates are from 05/01 to 05/03.

ASSISTANT: Please, stay online.

USER: Ok.

ASSISTANT: Thanks for waiting. There is a flight 1008 of Delta airline with the fare of 100 with a connecting flight. Shall I proceed?

USER: Please proceed o book.

ASSISTANT: Reservation of your ticket has been done.

USER: Thank you.

ASSISTANT: Thank you for availing us.