You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I'm Samuel Lee, want to travel from PHL to DEN. Please help me in booking my ticket.

ASSISTANT: Sure, on which dates you are planning to travel?

USER: Sure, my travelling dates are from 04/01 to 04/03.

ASSISTANT: There is a flight which can travel to your region having a single lay out in between your journey having a ticket fare of 200 which is provided by Southwest airlines. Would you like to book this flight for your journey?

USER: Please book this ticket for me.

ASSISTANT: Your ticket is booked in 1004 flight.

USER: Thank you for your help.

ASSISTANT: Most welcome.