You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

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

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

USER: My planned travel dates are Jan 16-18.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Do you have any specifications?

USER: I want to depart and arrive in the evening.

ASSISTANT: May I know your name please?

USER: My name is Carol Young.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, no issues. Thank you for your quick response.

ASSISTANT: Thank you for reaching us.