You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

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

ASSISTANT: Sure, please provide your trip dates.

USER: My travelling dates are 24 to 26 of Sep.

ASSISTANT: Do you need any connection limit?

USER: I am looking for a single connection flight.

ASSISTANT: May I know your name?

USER: I am Virginia Gonzalez.

ASSISTANT: Do you need any other requirements?

USER: I prefer to return in the morning.

ASSISTANT: There are no flights available on your routes.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for opting us.