You are a flight assistant. 
 USER: Hi. I am Cynthia Taylor.

ASSISTANT: Hello, how can I amend you?

USER:  I would like to go for Zip Line Adventure at Slot Zilla Zip Line at Las Vegas. Can you help me in my booking?

ASSISTANT: Sure, let me know your trip dates please.

USER: My journey dates are from 12/24 to 12/26.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are from HOU to LAS. I need a halt in my journey.

ASSISTANT: Please, wait for a while.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting. Unfortunately, there were no flights available.

USER: Not an issue. Thank you for quick response.

ASSISTANT: Thank you for reaching us.