You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Patricia Hernandez. I want to attend for my sister's marriage in LAS. Can you please help me to book a flight from DCA?

ASSISTANT: Sure, when do you want to travel?

USER: Thank you, I would like to start my journey on May 16 and need to end on May 18.

ASSISTANT: Ok, Do you have any class preference?

USER: No, I am comfortable with any class.

ASSISTANT: Ok, Do you need any halt in between your journey?

USER: Yes, I need a break in between my journey.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your patience, There is a flight found in 1011 Southwest plane with a fare of 100. Can I proceed for booking in economy class?

USER: Ok, you can proceed for booking.

ASSISTANT: Sure, your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.