You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I best serve you today?

USER: Can you please book a ticket from DCA to IAH to meet my sister?

ASSISTANT: Sure, please share me your trip dates.

USER: My journey dates are Nov 8 and Nov 10.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I am comfortable with any connection.

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

USER: I am Donald Clark.

ASSISTANT: May I know your class preferences?

USER: I am comfortable with any class.

ASSISTANT: We found  a AA airline and 1007 is flight number with a fare of 100. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you.

ASSISTANT: Thank you for approaching us.