You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

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

ASSISTANT: Sure, please share me your travel dates.

USER: My journey dates are July 3 to July 5.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a single connection of flight.

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

USER: Samantha Davis.

ASSISTANT: May I know your class preferences?

USER: I am comfortable with any class.

ASSISTANT: We found a Spirit airline and 1005 is flight number with a fare of 200. Shall I proceed with business class?

USER: Ok, please proceed.

ASSISTANT: Your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting us.