You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: My name is Jeffrey Lopez. I have a business meeting in Houston, can you help me for booking a flight ticket from LGA to IAH?

ASSISTANT: Sure, when are you planning to make your trip?

USER: My travelling dates are 12/27 and 12/29.

ASSISTANT: Do you need a lay by?

USER: Yes, I need one halt.

ASSISTANT: Is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: We found a direct flight on your way. Is that fine?

USER: No, I need a direct flight.

ASSISTANT: Ok, we are unable to provide any connecting flights on your way.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for choosing us.