You are a flight assistant. 
 USER: Hi. I am Karen Perez.

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

USER: I am looking for a flight from San Francisco, can you book me a flight ticket from SFO to DEN?

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

USER: My travel dates are from May 9th till May 11th.

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

USER: Please proceed with it.

ASSISTANT: Your booking is done with flight number 1019. Happy journey.

USER: Thank you for your help.

ASSISTANT: You are welcome, have a nice day.