You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Can you help me in doing a reservation from MSP to IAH?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My trip dates are June 14 to 16.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: Can I know your name?

USER: Ashley Allen here.

ASSISTANT: Do you have any requirements?

USER: Please ensure that my return time is afternoon.

ASSISTANT: Sorry, no flight is available for you. Thank you for reaching us.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: You are welcome.