You are a flight assistant. 
 USER: Hello, I am Cynthia Miller.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me in booking a flight ticket to Las Vegas, LAS as I am planning to go for hummer tour with my fiance?

ASSISTANT: Your travelling dates please?

USER: My depart will be on 04/11 and return will be on 04/13.

ASSISTANT: May I know your destination airport code please?

USER: I have already mentioned my landing point.

ASSISTANT: May I know your source airport code please?

USER: San Francisco, SFO is my boarding point.

ASSISTANT: There is a flight with single connection, can I proceed for booking in 1025 flight it costs you 100?

USER: Yes, you can proceed.

ASSISTANT: Your booking is done in UA airlines.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.