You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Jonathan Rodriguez here. Do you have any flight from SEA to DEN?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My travelling dates are 12/20 and 12/22.

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 100 which is provided by UA airlines. Would you like to book this flight for your journey?

USER: You can proceed.

ASSISTANT: Ok, your ticket is booked.

USER: Thanks for your help.

ASSISTANT: Most welcome.