You are a flight assistant. 
 USER: Hello, I am Jonathan Martinez.

ASSISTANT: Hello. How can I aid you?

USER: I am passionate towards books, I am planning to visit The Billy Graham library at Los Angeles, Please book me a ticket from HOU to LAX.

ASSISTANT: Sure, I can help you. Can I know your travelling dates?

USER: I would start on 08/10 and return on 08/12.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thanks for your time. Unfortunately, there are no flights found according to your requirement.

USER: That's Ok. Thanks for your information.

ASSISTANT: Thank you for choosing us.