You are a flight assistant. 
 USER: Hello,. I am Matthew Gonzalez.

ASSISTANT: Hello. How could I assist you?

USER: I want to adopt a boy who is living in Orphanage home at Houston. Can you please book a ticket which is having a direct flight?

ASSISTANT: Sure, to book a ticket may I know when would you like to travel?

USER: I want to travel on 01/13, and need to catch return flight on 01/15.

ASSISTANT: Could you please share me your airport codes?

USER: I need to leave from my nearest airport LAS to reach IAH.

ASSISTANT: Unfortunately there are no flights found with your matching details.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thanks for the information.