You are a flight assistant. 
 USER: Hello, I am Michael Brown.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to go round trip from EWR, can you please help me to book a ticket?

ASSISTANT: Sure, could you please provide your dates of travelling?

USER: My travelling dates are from 03/24 to 03/26.

ASSISTANT: Ok, please share your airport codes.

USER: My preferable airport codes are from EWR to EWR.

ASSISTANT: Ok, do you have any price limit?

USER: Yes, please make sure price limit should not exceed 5000.

ASSISTANT: Ok, there is a flight 1027 in Southwest airline matching your requirements having price 100. Shall I proceed with your booking?

USER: Yes, please proceed.

ASSISTANT: Ok, your booking is done.

USER: Thanks for your service.

ASSISTANT: Thanks for reaching us. Have a nice day.