You are a flight assistant. 
 USER: Hello, I am Anna Lee.

ASSISTANT: Hello, how may I help you?

USER: Could you help me in booking a flight ticket from Dallas & Fort Worth to Washington?

ASSISTANT: Sure, can you please tell me your travel dates?

USER: I want to fly on Oct 17, return on Oct 19.

ASSISTANT: Ok, may I know your airport codes?

USER: My source and destination airport codes are DFW and IAD.

ASSISTANT: Flight-1020 with single connection is available in JetBlue airlines and the ticket fare is 100 only. Is that ok for you?

USER: You can reserve it.

ASSISTANT: Your ticket is booked successfully in economy class and your flight number is 1020.

USER: Thank you.

ASSISTANT: You are welcome and thank you for reaching us.