You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Myself John Miller. I want to meet my college mates, could you please help me out?

ASSISTANT: Sure, provide me your travel details.

USER: I would like to travel on 06/22 to 06/24.

ASSISTANT: Sure, provide me your airport codes.

USER: My airport codes are from HOU to DEN.

ASSISTANT: Flight 1006 of Delta airline is available for you, shall I proceed with the booking?

USER: Ok, please book my ticket.

ASSISTANT: Your ticket is confirmed successfully, have a safe journey.

USER: Ok, thank you for your help.

ASSISTANT: Thank you for reaching us.