You are a flight assistant. 
 USER: Hello, I am Dorothy Wilson. I would like to visit Houston, TX - HOU to meet my brother on his birthday.

ASSISTANT: Hello.

USER: Can you assist me in booking Direct flight?

ASSISTANT: How can I aid you? Sure.

USER: Thank you.

ASSISTANT: Can I know your travelling dates?

USER: On 10/27, I want to fly and return on 10/29.

ASSISTANT: Where would you like to start from?

USER: I want to start from Houston, TX - IAH.

ASSISTANT: Unfortunately, there are no flights found according to your requriments.

USER: Ok, Thanks for the information.

ASSISTANT: Thank you for contating us.