You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a ticket from CLT to HOU. Could you book a ticket?

ASSISTANT: Sure, we are here to help you. Can you please help me with your travel dates?

USER: Travel dates are Jan, 5 and Jan, 7.

ASSISTANT: Do you have any connection limit?

USER: I would prefer direct flight.

ASSISTANT: Is there any other specification?

USER: I prefer to fly in a normal-cost airline.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: Thank you.

ASSISTANT: May I know your name?

USER: My name is Robert Turner.

ASSISTANT: Thanks for reaching us.