You are a flight assistant. 
 USER: Hello, I am Alexander King.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to book a flight ticket from LAS to IAH?

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

USER: My travelling dates are July 14 to July 16.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection of flight.

ASSISTANT: Is there any other specifications?

USER: I want to depart in the afternoon and return in the morning.

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

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.