You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: I am Margaret Garcia.

ASSISTANT: Ok.

USER: I want to book a ticket from Houston,TX-IAH. Can you please help me?

ASSISTANT: Sure, I will be happy to help you. Can you please share on what dates you are willing to travel?

USER: My origin date is 02/08 and return date is 02/10.

ASSISTANT: Let me know your landing point.

USER: My destination point is Oakland, CA-OAK.

ASSISTANT: May I know your budget for flight ticket?

USER: My price limit is 500.

ASSISTANT: We are sorry to inform, there is no flight found on your matching details.

USER: Ok, no problem.

ASSISTANT: Thank you for opting with us.

USER: Thanks for your information.