You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Brandon Taylor. I need to book a ticket to meet my relatives after a long time. Could you please help me in booking a ticket on 06/11?

ASSISTANT: Sure, may I know your airport codes?

USER: My airport codes are ORD and DCA.

ASSISTANT: Can you please share me your return date?

USER: I intend to return on 06/13.

ASSISTANT: Do you have any specification?

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

ASSISTANT: There is no flight on your details.

USER: Ok, thank you for your information.

ASSISTANT: Thank you so much for choosing us.