You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight from DEN to visit IAH. Can you help me with booking?

ASSISTANT: Please provide your trip dates.

USER: I will fly on Oct 9th and return on Oct 11th.

ASSISTANT: Do you need any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Do you need any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Michelle Scott.

ASSISTANT: There are no flights available on your routes.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing us.