You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket from OAK to IAH, can you help me with it please?

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

USER: My travelling dates are July 13 and July 15.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: Please share your name.

USER: My name is Dennis Lopez.

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

USER: That's ok, thank you for the response.

ASSISTANT: Thanks for reaching us.