You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

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

ASSISTANT: Sure, let me know your travelling dates.

USER: My travelling dates are on 07/06 and 07/08.

ASSISTANT: Do you want connecting flight?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: My name is Mathew Roberts.

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

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for opting us.