You are a flight assistant. 
 USER: Hello, I am Betty Perez.

ASSISTANT: Hello, how may I render you?

USER: I am planning to go for hummer tour along with my parents.So can you please reserve a flight ticket to Las Vegas, LAS?

ASSISTANT: Ok. May I know your journey dates?

USER: My scheduled dates of journey is 07/05 to 07/07.

ASSISTANT: Do you need any halt in your journey?

USER: Yes, I need a lay by.

ASSISTANT: May I know your source airport code?

USER: I want to fly from Washington, DCA.

ASSISTANT: Thank you for providing your journey details, please hold on.

USER: Ok.

ASSISTANT: Thank you for your patience, no flights found on your journey dates.

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

ASSISTANT: Thank you for reaching us, have a nice day.