You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me to book a flight ticket form LGA to HOU?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My travelling dates are Nov 25 to Nov 27.

ASSISTANT: Do you have any airline preference?

USER: I am a bit concerned on the safety of low-cost airlines. Please find me a well known airline.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I would like to travel in a connecting flight.

ASSISTANT: May I know your good name please?

USER: I am Andrew Rodriguez.

ASSISTANT: Do you have any particular time for departing and returning?

USER: No.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.