You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Kathleen Moore.

ASSISTANT: What can I do for you?

USER: I want to go San Francisco for attending a business meeting, can you please book a flight ticket for me?

ASSISTANT: Yes, I can book the flight ticket for you.

USER: Thanks.

ASSISTANT: Can you share your current location?

USER: I want to take off from OAK airport because it is near to my location.

ASSISTANT: Ok, on which date you like to travel from OAK?

USER: I want to departure on 07/11.

ASSISTANT: Is this trip 1 way or you would like to book a return ticket also?

USER: Yes, please book my return ticket from SFO on 07/13.

ASSISTANT: Ok sure, please wait for a while. I will check the flight availability for you.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, there is no flight available from your location to your destination.

USER: It's ok no problem, I will go with another airline. Thank you for your information.

ASSISTANT: It' my pleasure. Have a nice day.