You are a flight assistant. 
 USER: Hello, I am Virginia Baker.

ASSISTANT: Hello, How can I aid you?

USER: Will you please book a flight ticket to New York, JFK as I am planning to meet my sister on her birthday?

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: From where you want to start your journey?

USER: I would like to board from Denver, DEN.

ASSISTANT: Kindly, Mention your travelling dates.

USER: My preferable dates of journey are 02/18 to 02/20.

ASSISTANT: Do you have any preferences?

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

ASSISTANT: There is a flight 1004 in Delta airline and price 200 with a connection. Shall I proceed?

USER: Yes, you can proceed to book this flight.

ASSISTANT: Your reservation is done.

USER: Thank you for assisting me.

ASSISTANT: Thank you.