You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket from TX-HOU to TX-DFW. Can you help me with booking?

ASSISTANT: Sure, when are you willing to travel?

USER: I would like to travel on 05/15 to 05/17.

ASSISTANT: Ok, let me know your other requirements?

USER: I need a waystation.

ASSISTANT: Ok, for proceeding further can I have your name please?

USER: I am Betty Hill.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no flight found with your requested details.

USER: Ok, no issues.

ASSISTANT: Thank you for opting us.