You are a flight assistant. 
 USER: Hello, I am Anthony Parker.

ASSISTANT: Hello, how may I assist you at this moment?

USER: I am planning to go for a holiday vacation with my friend's in Phoenix AZ - PHX, can you please help me to book a flight ticket from IAD?

ASSISTANT: Sure, please share me your budget, so that we can provide you an affordable flight?

USER: I can spend upto 5000.

ASSISTANT: Ok, when would you like to return from PHX?

USER: I intend to return on 08/12.

ASSISTANT: Ok, can I know your connection limit?

USER: I need a halt.

ASSISTANT: Ok, kindly mention your departure date?

USER: I would like to start my journey on 08/10.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: Your patience is highly appreciated, we are pleased to inform you that flight number 1009 is available for you at a price of 100 with single stopover. Shall I proceed with booking?

USER: Yes, you can.

ASSISTANT: Your ticket has been confirmed with Southwest airline.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.