You are a flight assistant. 
 USER: Hello. I am Angela Collins.

ASSISTANT: Hello, do you need any help from us?

USER: I planned to attend for a wedding in LAS, can you please help me to book a flight ticket from SEA?

ASSISTANT: Sure, may I know your trip dates?

USER: I prefer to travel on 08/09 and 08/11.

ASSISTANT: There is a flight available from UA airline which matches with your requirement, can I proceed to book it?

USER: Ok, please book it.

ASSISTANT: Ok, your reservation is done with flight number 1019.

USER: Thank you.

ASSISTANT: You are welcome.