You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I want to book a flight ticket from IL to meet my old friend in CA, can you help me to book a flight ticket with single connection?

ASSISTANT: Sure, can you share your airport codes?

USER: Sure, my boarding and landing airport codes are ORD and SFO.

ASSISTANT: Kindly, mention your trip dates.

USER: I intend to start on 03/11 and my return date will be on 03/13.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Are there any other specifications?

USER: No more specifications.

ASSISTANT: We found a direct flight of fare 100 with airline Delta and number 1016. Can I book?

USER: That's ok, please proceed with the booking.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you for your assistance.

ASSISTANT: Please forward your name.

USER: I am Timothy Thompson.

ASSISTANT: Thank you for availing us.