You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Myself Joseph Gonzalez. I have to go to Houston next week for my film shooting purpose so can you please help me in flight ticket booking process from LAS to HOU?

ASSISTANT: Sure, may I know your travel dates?

USER: Thank you for your response, I want to take off on Sept 19 and book my return ticket also on Sept 21.

ASSISTANT: Do you have any connection limit?

USER: I need 1 break in between my journey.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Ok, please wait a minute.

USER: I want to take off in afternoon time so please check with this.

ASSISTANT: Sorry, there were no flights found on your specifications.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you.