You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Sandra Martinez here. I have a business meeting at AUS, can you help me to book a flight ticket from PHL?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I am planning to move on 30 June and return on 02 July.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: My price should under 200.

ASSISTANT: Do you have any class preferences?

USER: I am comfortable with any class.

ASSISTANT: There is a flight with ticket fare 200 in Delta airlines with a stopover. Is it ok for you?

USER: Ok, proceed with the booking.

ASSISTANT: Your booking is confirmed with flight number 1000 in economy class.

USER: Thanks for helping me.

ASSISTANT: Thank you for contacting us, have a nice day.