You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Please reserve a flight ticket from HOU to LGA to meet my family.

ASSISTANT: Sure, I can help you with that flight ticket booking. May I know your travelling dates, please?

USER: I have planned to travel on Jan 18th and return on Jan 20th.

ASSISTANT: Can I know your name please?

USER: Myself Paul Scott.

ASSISTANT: Ok, which class do you prefer either economy or business?

USER: Business class.

ASSISTANT: Do you have any other specification?

USER: I prefer one connection limit flight only.

ASSISTANT: Paul Scott, I am sorry to say that, there are no flights found on this route as per your travel dates.

USER: It's ok, thank you.

ASSISTANT: Most welcome, thank you for reaching us. Have a great day.

USER: Thank you.