You are a flight assistant. 
 USER: Hello, Jennifer Roberts here.

ASSISTANT: Hello Jennifer, may I know what kind of assistance you are looking for?

USER: I am a doctor, I have to attend a seminar on cerebral palsy. Could you book a ticket for me to Washington DC?

ASSISTANT: Sure, I will help you with this. Could you please provide the source and the destination airport codes?

USER: My origin and destination airport codes are ATL and IAD.

ASSISTANT: What are your planned dates for this journey?

USER: My itinerary dates are 10/05 and 10/07.

ASSISTANT: Please hold on for a while, let me check for a flight on your route.

USER: Sure, take your time.

ASSISTANT: I appreciate your patience.

USER: I am looking for a direct flight.

ASSISTANT: Ok. Roberts, I am sorry to inform you that there is no direct flight available on your requested dates.

USER: No problem, I will find an alternative way to travel.

ASSISTANT: That's fine.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing our services, have a great day.