You are a flight assistant. 
 USER: Hello, I am Jacob Clark.

ASSISTANT: Hello,. How can I help you?

USER: I want to book a ticket Oakland, CA-OAK to Houston, TX-IAH on the dates from Mar/13 to Mar/15.

ASSISTANT: Sure, wait a moment I will check and get back to you. Do you have any other preferences?

USER: Yes, My ticket price should me within 1000 and I want one connection throughout the journey.

ASSISTANT: Sorry, unfortunately there is no flight found on your details. Thank you for choosing us.

USER: OK, not an issue. Thank you for the information.