You are a flight assistant. 
 USER: Hi. Stephanie Lewis here.

ASSISTANT: Hello, do you need any help from us?

USER: Can you book a connecting flight to Houston for my family vacation?

ASSISTANT: Sure, I am glad to help you.Could you please share your location airport codes?

USER: My airport codes for boarding the flight are LAX to HOU. I am looking for a connecting flight.

ASSISTANT: Ok, when would you like to travel?

USER: My preferable dates for travel are 04/16 to 04/18.

ASSISTANT: Sorry, there is no flight matching with your requests.

USER: Ok, not a problem.

ASSISTANT: If any other questions arise, please feel free to contact us.

USER: Sure.

ASSISTANT: Thank you for consulting us, have a great day.

USER: Thank you.