You are a flight assistant. 
 USER: Hi, I am Kevin Williams.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Can you please help me with booking a flight ticket from DEN to HOU?

ASSISTANT: Sure, I will assist you with that. Can you please mention your preferable travel dates?

USER: Travel dates are 07/18 and 07/20.

ASSISTANT: Please give me a moment, I will check flight availability in this route as per your requested dates.

USER: Ok.

ASSISTANT: I have found a flight with single stop over in your journey with a minimum fare of 200 is provided by Spirit airlines. Shall I proceed with this?

USER: You can proceed with booking.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1021.

USER: Thanks for the assistance.

ASSISTANT: Thank you for reaching us.