You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jennifer Walker here.

ASSISTANT: Walker, how may I help you?

USER: I have to reach Washington DC very urgently so please help me to get a flight ticket.

ASSISTANT: Sure, please share your airport codes.

USER: Sure, i would like to travel from ATL to IAD.

ASSISTANT: May I know your itinerary dates?

USER: Sure, I need to travel on dates of 02/21 and 02/23.

ASSISTANT: Please wait for a moment, let me check for available flights.

USER: Sure but please check with connection 0, it is an emergency trip.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Sorry Walker, there is no direct flight on your route.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for contacting us.

USER: Most welcome.