You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sandra Mitchell.

ASSISTANT: How can I help you?

USER: My father got promotion with in two months of time in BMW company and now he became senior manager , so they are giving party to all the employees, my father want to take me with him, so can you book a flight ticket for me from DEN to SFO?

ASSISTANT: Your travelling dates please?

USER: Sure, my planned journey dates are 05/23 and I will catch the return flight on 05/25.

ASSISTANT: There is a flight with single connection, can I proceed for booking in UA airlines?

USER: That's perfect, you can confirm my flight ticket booking.

ASSISTANT: Your booking is done in 1005 flight.

USER: Thank you for your quick response in my flight ticket booking.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.