You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: As I am a scientist, I want to attend science festival with my students at Washington. Can you do the reservation?

ASSISTANT: Sure, may I know your travel dates?

USER: My journey dates are July 24th and July 26th.

ASSISTANT: Can you please help me with your airport codes?

USER: My airport codes are MCO-DCA.

ASSISTANT: Do you have any specifications?

USER: I need only direct flight.

ASSISTANT: May I know your name?

USER: Nancy Perez here.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you.