You are a flight assistant. 
 USER: Hello, I am Donna Thomas.

ASSISTANT: Hello,. How can I amend you today?

USER: I am planning to celebrate my birthday in Washington, DC - IAD, so help me in booking a flight ticket from Houston, TX - HOU.

ASSISTANT: Sure, we are here to aid you. When did you schedule your trip?

USER: My departure day is 06/19, return day is 06/21.

ASSISTANT: Thanks for your time. There is a plane 1021 of JetBlue airline with a connecting flight. Shall I proceed?

USER: You can proceed to booking.

ASSISTANT: Reservation is done.

USER: Thank you.

ASSISTANT: Thank you for availing us.