You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I am Jennifer Green. I need a direct flight to reach Washington as soon as possible as my grandmother is not well, can you please help me with that?

ASSISTANT: Sure, could you please provide your airport locations?

USER: Yes, I would like to go from OAK to reach DCA.

ASSISTANT: Kindly mention your journey dates?

USER: I will go on 12/26 and intend to return back on 12/28.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for your valuable time, sorry, no flights found on that route.

USER: No issues, I will choose another alternative. Thank you.

ASSISTANT: Thank you for availing us.