You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Margaret Clark.

ASSISTANT: How can I serve you?

USER: Can you book a flight ticket from SEA to IAD?

ASSISTANT: Sure. Can I know your travelling dates?

USER: My travelling dates are from 05/30 to 06/01.

ASSISTANT: Do you need any connecting flight?

USER: Yes, I am comfortable with any connection.

ASSISTANT: We found a JetBlue airline, flight number:1005 and the price is 100.

USER: Ok, Proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.