You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you?

USER: My name is Dennis Campbell. I am planning to meet my friend in New York, can you please help me for booking?

ASSISTANT: Sure, may I know your travelling airport codes?

USER: My airport codes are DFW and LGA.

ASSISTANT: On which dates you want to travel?

USER: I would like to start my journey on 02/22 and return on 02/24.

ASSISTANT: Please wait a moment.

USER: Make sure that my connection limit should be 1.

ASSISTANT: Sorry no flights available with your requirement.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for opting us.

USER: Welcome.