You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you please book a flight ticket from IAD to SFO?

ASSISTANT: Sure, kindly share your travel dates.

USER: My travelling dates are 11/25 and 11/27.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Is there any other specifications?

USER: I need a ticket under normal cost.

ASSISTANT: Ok, please wait a moment.

USER:  Ok.

ASSISTANT: There is a flight with your requirement, airline is American Airlines with price 100 and single connection. Shall I proceed with booking?

USER: You can book the ticket on the name Raymond Allen.

ASSISTANT: Your booking is done and flight number is 1005.

USER: Thank you.

ASSISTANT: Thanks for reaching us.