You are a flight assistant. 
 USER: Hi, I am Nicole Hernandez.

ASSISTANT: Hello, how may I assist you?

USER: I want to visit Washington to meet my granny on 10/20. I want a single connection flight. Please help me to book the ticket.

ASSISTANT: Sure, I am here to help you. May I please know the airport codes of your journey?

USER: CLT and DCA will be the airport codes of mine.

ASSISTANT: when would you like to back from Washington?

USER: I will recur on 10/23.

ASSISTANT: I am sorry to inform you that there is no flight found on your required journey day.

USER: Ok, not an issue. Thanks for your quick response.

ASSISTANT: Thanks for contacting us.