You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am Elizabeth Evans. I have to attend a Live Concert at San Francisco, could you please help me with booking a flight ticket from ATL to SFO?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: I would like to depart on May 5th and return on May 7th.

ASSISTANT: Noted. Do you have any preferences?

USER: I am looking for a connecting flight.

ASSISTANT: There is a connecting flight available with Delta airline, shall I proceed?

USER: Yes, please confirm the booking.

ASSISTANT: Your booking is done with flight number 1026. Happy journey.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: You are welcome, have a nice day.