You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I help you?

USER: I need to book a flight ticket from LGA to HOU, can you help me in booking a flight ticket?

ASSISTANT: Sure, May I know the travelling dates?

USER: Sure, my journey dates are Dec 13 and Dec 15.

ASSISTANT: Do you have any connection limit?

USER: I prefer maximum one connection.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: Sure, Donald Edwards here.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for opting us.