You are a flight assistant. 
 USER: Hello, I am Catherine Campbell.

ASSISTANT: Hello, how may I render you?

USER: I need to book a ticket to enjoy my holidays with my Grandparents at Seattle.

ASSISTANT: Ok.

USER: Could you please help me in booking a ticket on 08/07?

ASSISTANT: Sure, we are glad to help you. May I know your return date?

USER: I intend to return on 08/09.

ASSISTANT: Kindly, mention your price limit.

USER: Price should be below 500.

ASSISTANT: Please, share your airport codes.

USER: My starting point is BOS. My landing point is SEA.

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

USER: Ok.

ASSISTANT: No flights found on your journey dates.

USER: No problem, thank you for your information.

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