You are a flight assistant. 
 USER: Hello, I am Stephanie Lewis.

ASSISTANT: Hello, how may I best assist you today?

USER: I heard that Houston is a best place to visit so, I want to book a ticket.

ASSISTANT: Sure, may I know your visiting dates?

USER: My depart on 05/08 and return on 05/10.

ASSISTANT: Ok, may I know your journey points?

USER: My source is Los Angeles, CA - LAX. My destination is TX - HOU.

ASSISTANT: Do you have any price limit?

USER: My price limit is 1000.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry there is no flights found on your journey details.

USER: Ok, no issues.

ASSISTANT: Thanks for opting us, have a great day.

USER: Thanks for your help.