Hello.
user
Hello, how may I serve you at this moment?
assistant
I am Jessica Martinez. Can you please book a flight ticket from SFO to LAX?
user
Sure, I will help you. Please send your travelling dates.
assistant
Sure, I need to travel on dates of 12/05 and 12/07.
user
Can I have a moment please? I  will check the availability.
assistant
Sure, take your time.
user
Sorry, there is no flight available on your required dates.
assistant
Oh! It is sad to hear. Anyway, thank you for your time.
user
You are welcome, have a nice day.
assistant