You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Daniel Smith. I need to book a flight ticket from HOU to MSP. Please help me in booking a flight ticket.

ASSISTANT: Ok, please can I know the dates of your journey?

USER: My trip dates are from Apr, 06 to Apr, 08.

ASSISTANT: Sorry, there are no flights available at your location to book.

USER: Can you please check with depart time in the evening.

ASSISTANT: Thank you for choosing our agency. Sorry for the inconvenience.

USER: No problem, thanks for your information.

ASSISTANT: You are welcome.