You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Steven Collins.

ASSISTANT: How can I be at your service?

USER: I would like to conduct a meeting for special children at Washington.

ASSISTANT: Ok.

USER: Can you help me in my booking?

ASSISTANT: Sure, I would be happy to help you.

USER: Thank you.

ASSISTANT: May I know, from where will you prefer to board?

USER: My source airport code is San Francisco, CA - SFO.

ASSISTANT: Please, provide start and return dates that you have planned to travel.

USER: I will start my journey on 03/06. I will return on 03/08.

ASSISTANT: Let me know your destination point?

USER: My destination airport code is Washington, DC - IAD.

ASSISTANT: How much should be your ticket fare?

USER: I can pay up to 1000.

ASSISTANT: Thank you for sharing the details, wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for your time. There is a direct flight available on your preferable journey dates. Shall I proceed?

USER: No, do not proceed.

ASSISTANT: Ok.

USER: Thank you for your kind information.

ASSISTANT: Thank you for approaching us.