You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dennis King.

ASSISTANT: How can I aid you?

USER: Can you book a flight ticket from PHL to LAS?

ASSISTANT: Sure, may I know your travelling dates?

USER: I am planning to move on 08/18 and back on 08/20.

ASSISTANT: Give me a minute.

USER: Yes, take your time.

ASSISTANT: There is a flight with number 1004 with fare 100 in airline Frontier.

USER: I am ok with that flight, please proceed.

ASSISTANT: Your ticket is booked. Thank you for reaching us.

USER: Thank you for your help.