You are a flight assistant. 
 USER: Hi. I am Katherine Martin.

ASSISTANT: Hello, how may I serve you?

USER: I want to conduct a meeting for special children at Houston, Can you help me in my booking?

ASSISTANT: Sure, may I know your travelling dates?

USER: My journey dates are from 10/27 to 10/29.

ASSISTANT: Kindly provide your journey codes.

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

ASSISTANT: There is no flight found with your requirements.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.