You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What kind of assistance are you looking for?

USER: I would like to submit my project work at Dallas, please help me in booking a ticket from OAK to DFW.

ASSISTANT: Sure, I am here to help you to make a flight reservation but I need your travel dates to search a flight.

USER: I would like to plan my journey on Oct 4 and return on Oct 6.

ASSISTANT: Could you please let me know if you need a connecting flight?

USER: Yes, I need a connecting flight for my trip.

ASSISTANT: Would you like to avail any benefits for the comfort of your journey?

USER: No, thank you for asking. Please find the availability of best flights.

ASSISTANT: Ok, can I have your name please?

USER: My name is Justin Taylor.

ASSISTANT: Thank you for sharing your journey details, we are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for availing us.