You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you? On which dates you are willing to travel?

USER: I am Dennis Williams, want to travel from PHL to SFO. My travelling dates are from 11/21 to 11/23.

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 Delta airlines. Would you like to book this flight for your journey?

USER: Please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Most welcome.