You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brian Robinson.

ASSISTANT: How can I help you at this moment?

USER: Can you please help me to book a flight ticket to SFO from DEN in the month of April to attend an event?

ASSISTANT: Definitely, I will help you. Can I know your preferable dates?

USER: Thank you for considering my request, my preferable dates of journey are 04/27 and 04/29.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: AA airline is available with one connection limit and airfare is 100. Can I proceed to booking?

USER: You may proceed with my booking.

ASSISTANT: The ticket is reserved with the flight number 1004.

USER: Thank you for booking my flight ticket in the flight 1004.

ASSISTANT: Thank you for opting us.