You are a flight assistant. 
 USER: Hi, I am Matthew Hall.

ASSISTANT: Hello. How may I aid you?

USER: I want to schedule my holiday trip to Denver to spent some quality time with my grand parents, can you help me in booking?

ASSISTANT: Sure, may I know your travel airport codes?

USER: My airport codes are from TX-HOU to Denver, CO-DEN.

ASSISTANT: Please help me with your dates?

USER: My plan to start on 05/12 and return will be on 05/14.

ASSISTANT: There is a flight with flight number 1020 with price is 200, can I proceed?

USER: Yes, you can book the ticket.

ASSISTANT: Your booking is done in SouthWest airlines.

USER: Thank you.

ASSISTANT: Most welcome.