You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I need a direct flight for my journey, can you please help me out with booking of a flight ticket?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates?

USER: Thank you. Sure, I am planning to move on Jan 31 and please book my return ticket also on Feb 02.

ASSISTANT: May I know your airport codes?

USER: I want to travel from HOU to LAX.

ASSISTANT: Let me know your name?

USER: Sure, my name is Gary Young.

ASSISTANT: Ok, wait for some time.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: Oh! Sad to hear that. Anyway, thank you for the information.

ASSISTANT: Thanks for approaching us.

USER: Welcome.