You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I am Timothy Mitchell. I want to travel form Las Vegas, NV - LAS to Oakland, CA - OAK. Can you book me a ticket?

ASSISTANT: Sure, Can you please provide travel dates?

USER: Yes. I would start on May 29 and end on May 31. Please make sure the price limit must be 1000 and connection limit 1.

ASSISTANT: OK, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform no flight found with your requirement.

USER: OK. Thanks for the response.

ASSISTANT: Thanks for reaching us, have a good day.