You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you today?

USER: I am Rebecca Thomas planning to visit Washington on my vacation, can you book a ticket on dates 05/18 and 05/20?

ASSISTANT: Surely, I will help you. May I know the source detail?

USER: Sure, my airport codes are SFO and IAD.

ASSISTANT: Thank you. Please wait a minute, I will check and let you know.

USER: Ok.

ASSISTANT: We have found a flight from Delta airline with flight number 1004. Shall I do the reservation?

USER: Can you please check whether the price is within 1000 and connection is 1?

ASSISTANT: Price 100 with one connection.

USER: Ok, proceed with my booking.

ASSISTANT: Your ticket has been booked.

USER: Ok, thank you.

ASSISTANT: Thank you, Have a nice journey.