You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Can you please help me in booking my flight ticket from HOU to DFW?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My planned travel dates are July 29-31.

ASSISTANT: Ok, could I have your name please?

USER: My name is John Gonzalez.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I need a direct flight.

ASSISTANT: Sorry, there is no flight with your request.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: You are welcome.