You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to visit Denver Museum with my sister, please help me in booking a ticket.

ASSISTANT: Sure, please help me with your airport codes to proceed.

USER: My airport codes are from DCA to DEN.

ASSISTANT: Ok, may I know your travel dates also?

USER: My trip dates are from 07/23 to 07/25.

ASSISTANT: Frontier airline is available with 1 connection, would you like me to proceed?

USER: Ok, please proceed my booking.

ASSISTANT: On whose name you would like to book the ticket?

USER: On the name of Kevin Lopez.

ASSISTANT: Ok your ticket has been booked, have a safe journey.

USER: Thank you for your help.

ASSISTANT: You are welcome.