You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am planning to have a vacation at Washington, can you please help me in booking?

ASSISTANT: Sure, may I know your planning dates?

USER: My planned dates are from 05/09 to 05/11.

ASSISTANT: Let me know your airport codes.

USER: It is for round trip DC-IAD.

ASSISTANT: Please be on hold.

USER: Ok.

ASSISTANT: Thank you for being on hold, flight number 1023 with single connection is available at a price 100. Shall I proceed with elta airline?

USER: You can proceed with booking.

ASSISTANT: For further proceeding I need your name.

USER: I am Frank Campbell.

ASSISTANT: Reservation is done in Delta airline on the name Frank Campbell.

USER: Thank you.

ASSISTANT: Thank you for choosing us.