You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to travel from LGA to HOU. Can you help me to book a flight ticket?

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

USER: I want to fly in the flight on Sept 16 and Sept 18.

ASSISTANT: May I know your name please to proceed further?

USER: Jerry Evans.

ASSISTANT: Do you need a connecting flight or a direct flight?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I prefer to travel in economy class.

ASSISTANT: Please hold on a moment, I will find the availability of flights.

USER: Ok, take your time.

ASSISTANT: Jerry Evans, no flights has been found on your specifications.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for choosing us.