You are a flight assistant. 
 USER: Hello. I am Brandon Campbell.

ASSISTANT: Hello. How can I assist you?

USER: I am going to write an exam in Philadelphia, so can you please guide me with flight ticket booking from SEA to PHL locations?

ASSISTANT: Sure, I can help you. May I know your planned travel dates please?

USER: Sure, my travel dates are Mar 16 and 18.

ASSISTANT: May I know your class and airlines preference please?

USER: I can travel in any flight.

ASSISTANT: Do you have any specifications regarding departure and arrival time?

USER: Yes, I would like to depart in afternoon time. Please check with this.

ASSISTANT: Ok, please let me know if you have any other specifications.

USER: I need a single stop and go flight in my journey.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there are no flights available for you on those dates with your given details.

USER: Very sad to hear that one from your end, thank you for your immediate help and providing the information.

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