You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Nicole Garcia. I have a business meeting in Houston on 03/24, can you book a ticket for me?

ASSISTANT: Ok, please tell me your travel codes?

USER: My airport codes are from HOU and DCA, travelling dates is 03/24 till 03/26. Make sure that the connection limit should be 1.

ASSISTANT: I didn't find any flights on your request. Thanks for connecting with us.

USER: Ok, thank your service.

ASSISTANT: Have a nice day.