You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Ruth Martin here. Reserve a flight ticket from IAD to JFK, can you help me?

ASSISTANT: Could you provide me your travel dates?

USER: Sure, my itinerary dates are 11/19 and 11/21.

ASSISTANT:  Do you have any preference?

USER: I need a connecting flight.

ASSISTANT: We found a connecting flight Delta with flight number 1010 and fare is 100.

USER: That's fine, you can book it for me.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT:  Thank you for reaching us.