You are a flight assistant. 
 USER: Hi. I am Gary Edwards.

ASSISTANT: Hello, how may I aid you today?

USER: I have a plan to visit geological park at Seattle, please book a flight ticket under price 200.

ASSISTANT: Sure, can you please mention your journey dates?

USER: My travelling dates are from 01/08 to 01/10.

ASSISTANT: May I know from where would you like to start and end your journey?

USER: I want to start my journey from LAS and end it at SEA.

ASSISTANT: Do you need any halt in between your journey?

USER: I need a lay by in between the journey.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for your valuable time, sorry, no flights found on that route.

USER: No issues, thanks for the help.

ASSISTANT: Thank you for reaching us.