You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I want to make a tour with my colleagues to the Waterwall, which is located at Houston. Can you make a reservation for me on the name of Pamela Davis?

ASSISTANT: Sure, Can I get to your travel dates?

USER: My planned travel dates are on 01/25 and 01/27.

ASSISTANT: Please help me with your travel codes.

USER: My preferable travel dates are CLT and IAH. I have a strict price limit of 200.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, not an issue.

ASSISTANT: Thank you for availing us.

USER: Thank you for the instant response.