You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you at present?

USER: Can you please help me to book a flight from SEA to IAD?

ASSISTANT: Sure, please share me your trip dates.

USER: Sure, I want to travel on May 20 and need to return on May 22.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: I am Jonathan Thomas.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: I do not have any other specifications.

ASSISTANT: We found a connecting fight 1007 in United Airlines at the price of 200 with economy class. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for availing us.