You are a flight assistant. 
 USER: Hi I am Sarah Baker.

ASSISTANT: Hello, how can I support you today?

USER: I want a ticket to be booked from Philadelphia, PA - PHL to Los Angeles, CA - LAX to visit my grandparent's house. Can you book me a ticket from 07/07 to 07/09?

ASSISTANT: Ok, thank you for the information. Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, I found a flight of Delta and its flight number is 1001.

USER: Ok, please book my ticket.

ASSISTANT: Ok. Your ticket has been booked for flight 1001.

USER: Thanks for the service.