You are a flight assistant. 
 USER: Hello,. I am Kimberly Adams.

ASSISTANT: Hello, how can I help you today?

USER: I would like to book a flight from Dallas & Fort Worth with my friends to visit the best places in Houston. Would you please help me in booking a flight ticket?

ASSISTANT: Sure, can you please help me with your journey dates?

USER: My journey dates are 07/29 and 07/31.

ASSISTANT: May I know your airport codes?

USER: My airport codes are TX-DFW and TX-HOU.

ASSISTANT: Thank you for your details. Sorry, we did not found any flights based on your preferences.

USER: OK, no issue. Thank you for your support.

ASSISTANT: Thank you for reaching us.