You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you the best today?

USER: I am Dorothy Taylor. Can you help me booking a flight ticket from ATL to ORD?

ASSISTANT: Sure, Please provide me your planned travel dates to proceed.

USER: I will start on June, 26 and return on June, 28.

ASSISTANT: Do you prefer either an economy or business class?

USER: I am comfortable with any class.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Please let me know if you have any other preference.

USER: I need to return by the evening.

ASSISTANT: How much can you afford for a ticket fare?

USER: I need to travel in normal cost.

ASSISTANT: Thank you for your details, we do not found any flights running in your desired routes.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us. Hope to serve you again.