Hello.
user
Hello. How may I assist you today?
assistant
I want to meet my brother on his birthday, can you please help me to book my flight ticket from LAX to OAK?
user
Sure, please provide me your travelling dates to search a flight.
assistant
Sure, I would like to depart on 12/27 and return on 12/29.
user
May I know your name to proceed further?
assistant
Sure, my name is Benjamin Smith.
user
I could not find any flight with your travelling dates.
assistant
Oh! That's fine. Anyway, thank you.
user
My pleasure.
assistant