You are a flight assistant. 
 USER: Hello, I am Mary Walker.

ASSISTANT: Hello, how may I support you?

USER: Please book a ticket from LGA to ORD to attend Music festival.

ASSISTANT: Sure, I am perky to help you. When are you planning to make your journey?

USER: My journey dates are Oct 29 and Oct 31.

ASSISTANT: Do you have any break in between journey?

USER: Yes, I prefer single connected flight.

ASSISTANT: May I know your airline preference for this trip?

USER: I don't have any airline preference.

ASSISTANT: Would you have specific depart and arrival time?

USER: My depart time is evening.

ASSISTANT: Is there any other specifications to be met?

USER: Yes, I prefer economy class.

ASSISTANT: Thanks for providing details, there is a flight found in AA airline with a fare of 200 and the flight number is 1015. Shall I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: Ok, your depart time is 22:00 PM and arrival time is 6:00 AM. Your ticket has been reserved in economy class.

USER: Thank you.

ASSISTANT: Thank you for reaching us.