You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to celebrate my birthday at Dallas. Can you help me in booking a ticket?

ASSISTANT: That's sounds good. I will surely help you with that. Can you please help me with the codes of the airport, where you planned to catch the flight and land.

USER: Well, I would like to depart at OAK and destination airport is DFW.

ASSISTANT: Similarly, can you help me with the dates of your journey too?

USER: Sure. I am planning to travel on 01/03 and 01/05.

ASSISTANT: For further proceeding I have to know your name, so can you please provide me your name?

USER: Sure, my name is Joseph Rodriguez.

ASSISTANT: Joseph, please wait for a moment while checking with the available tickets for you.

USER: Sure.

ASSISTANT: I have found an available ticket for you with Delta airline and flight number is 1025. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your kind service.

ASSISTANT: Welcome. Thank you for approaching us.