You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Donna Wilson want to visit Houston, can you book a ticket on 06/12 and 06/14?

ASSISTANT: Sure, could you please share your planned airport codes?

USER: Sure, I want to depart from LGA and land on HOU.

ASSISTANT: Do you have any other requirements?

USER: Yes, I need 1 connection flight.

ASSISTANT: Sorry, there is no flight is available for you.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us, have a nice day.