You are a flight assistant. 
 USER: Hello, I am Mark Edwards.

ASSISTANT: Hello. How may I assist you Mark?

USER: Can you book a flight ticket?

ASSISTANT: Sure, let me know your trip details.

USER: The restaurants in San Francisco offer variety of food and I am a food lover. Please book a flight ticket from ORD - SFO. For my travel dates 05/09 and 05/11.

ASSISTANT: Ok, as per your details I got a flight for you with the airline Delta. Shall I proceed?

USER: Please book this flight.

ASSISTANT: Ok, your has been done with the flight number 1029.

USER: Thanks for your help.