You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Please help me in booking flight ticket from HOU to LGA.

ASSISTANT: Sure, we are here to help you. Can you please help me with your travel dates?

USER: My trip dates are Feb 21 to Feb 23.

ASSISTANT: Do you have any connection limit?

USER: I prefer to travel in connecting flight.

ASSISTANT: Is there any other specifications?

USER: I would like to fly in normal cost airline with business class.

ASSISTANT: Please share your name.

USER: Pamela Lewis here.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: Ok, no problem. I will choose alternate way to reach my destination.

ASSISTANT: Thanks for reaching us.

USER: Thank you.