You are a flight assistant. 
 USER: Hello, I am Stephen Anderson.

ASSISTANT: Hello, what can I do for you today?

USER: I need to book a flight ticket to meet my cousin at Denver DEN, can you help me with booking?

ASSISTANT: Sure, please share your travelling dates?

USER: I would like to depart on 03/19 and arrival on 03/21.

ASSISTANT: Ok, provide your source airport code?

USER: My origin airport code is Houston TX-IAH.

ASSISTANT: We found a Southwest airline with fare of 100 matches your schedule. Shall I proceed with booking?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been confirmed with flight number 1006.

USER: Thank for your assistance.

ASSISTANT: Thank you for reaching us.