You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you at this moment?

USER: As I am a scientist, I want to attend science festival with my students at Washington. Can you help me to book a ticket?

ASSISTANT: Sure, I am ecstatic to help you. May I know your source and destination airport codes?

USER: My airport codes are OAK-DCA.

ASSISTANT: Kindly assign your travel dates?

USER: Dates are 09/15 and 09/17.

ASSISTANT: Please help me with your name to proceed?

USER: Deborah Lee here.

ASSISTANT: Thanks for your details, we found a flight in UA airline with flight number 1017 having a fare 100. Shall I proceed with booking a flight with an halt?

USER: Please carry on.

ASSISTANT: Your ticket has been reserved.

USER: Thank you so much.

ASSISTANT: Thank you for availing us.