You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me in booking from IAH to OAK, as there is a business meeting to attend?

ASSISTANT: Sure, please share your planned travel dates?

USER: My trip dates are May 29 to May 31.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a stopover flight.

ASSISTANT: Any other preferences?

USER: No.

ASSISTANT: Can I have your name please?

USER: I am David Evans.

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

USER: No issue, thank you.

ASSISTANT: Thank you for opting us.