You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to take my children for Denver, CO - DEN.

ASSISTANT: That's great, may I know your airport codes please?

USER: Can you help me out of it? My origin airport is PA - PHL and destination airport is CO - DEN.

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are 02/10 and 02/12.

ASSISTANT: I found a flight with your requirements in Southwest airlines. Can I proceed?

USER: Yes, please proceed.

ASSISTANT: For further process, may I know your name please?

USER: I am Charles Collins.

ASSISTANT: Thank you for providing your details, your ticket is confirmed. Your flight number is 1007.

USER: May I know the airline?

ASSISTANT: It is Southwest airlines.

USER: Thank you for the information.

ASSISTANT: Welcome.