You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: Please help me to book a flight ticket from LGA to HOU.

ASSISTANT: Sure, May I know the travelling dates?

USER: I want to travel on 04 Sep and return on 06 Sep.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other requirements?

USER: I would like to depart in the morning.

ASSISTANT: May I know your name?

USER: I am Margaret Wright.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Oh! that very sad to hear, thank you.

ASSISTANT: Thank you for opting us.