You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kimberly Phillips.

ASSISTANT: How can I help you today?

USER: Can you help me in booking my flight ticket from HOU to OAK?

ASSISTANT: Sure, can you please share your journey dates?

USER: My journey dates will be May 25 to May 27.

ASSISTANT: OK, any other preferences are you looking?

USER: I need a direct flight.

ASSISTANT: Ok, wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we couldn't found any flight with your preferences.

USER: Its ok, thank you.

ASSISTANT: Thank you for choosing us.