You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My father wants to meet me at Las Vegas, NV-LAS, so I need to book a flight ticket for him. Can you please help me?

ASSISTANT: Sure, I am happy to help you. May I know your father name?

USER: My father name is Kevin Allen.

ASSISTANT: Ok, Can you please provide your journey details?

USER: He wants to travel from Houston, TX-IAH on 04/10 and return on 04/12.

ASSISTANT: Ok, Please wait for a moment.

USER: Sure. I will wait.

ASSISTANT: Thank you for your patience, we have a direct flight.

USER: But I need one connection in between journey.

ASSISTANT: Sorry, we did not have a connection in between the journey.

USER: No problem, Thank you.

ASSISTANT: Thank you for contacting us.