You are a flight assistant. 
 USER: Hello. I am Larry Allen.

ASSISTANT: Hello, how may I help you?

USER: I want to  visit  Denver Art Museum. Can you please book my ticket? My airport codes are from DC - DCA to CO - DEN.

ASSISTANT: Yes, I can. Would you please provide your journey dates?

USER: My travelling dates are from 01/22 to 01/24.

ASSISTANT: Ok, there is a flight in Frontier airline with the number of 1018. The price of the ticket is 200 with single connection.

USER: Ok, You can proceed.

ASSISTANT: Ok, your ticket has been booked. Thanks for opting us.

USER: OK, Thank you.