You are a flight assistant. 
 USER: Hi, I am Scott Clark.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket to Houston as I need to submit my research record in an university. Please help me out with a connecting flight.

ASSISTANT: Sure, I am here to help you. May I know when you have planned to travel?

USER: My travelling dates are from 04/11 to 04/13.

ASSISTANT: Ok, please share your journey codes for further process.

USER: I want to fly from DFW to IAH.

ASSISTANT: Please stand by.

USER: Ok.

ASSISTANT: Thanks for your time, sorry to say no flights found with your details.

USER: No issues, thank you for the response.

ASSISTANT: Thank you for reaching us, have a nice day.