You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am planning to travel to New York, can you please help me to reserve a flight ticket from Washington?

ASSISTANT: May I know your trip dates?

USER: The planned trip dates are Apr 21st and Apr 23rd.

ASSISTANT: Do you prefer any connections?

USER: I prefer a single connection in between my journey.

ASSISTANT: May I know your specifications?

USER: I didn't have any other specifications.

ASSISTANT: Please share your name?

USER: My name is Debra Brown.

ASSISTANT: May I know your airport codes, I am little bit confused on your codes?

USER: The source and destination airport codes are IAD and JFK.

ASSISTANT: There are no flights found on your name.

USER: It's ok, not a problem with that. Anyways thank you for your time.

ASSISTANT: Thank you.