You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sarah Williams.

ASSISTANT: How can I  help you?

USER: Can you please help me in booking a flight ticket to IAD from SFO?

ASSISTANT: Your travelling dates please.

USER: My travel dates are from May 11 to May 13.

ASSISTANT: There is a flight with single connection, can I  proceed for booking in 1008 flight?

USER: You can proceed.

ASSISTANT: Your booking is done in Spirit airlines.

USER: Thank you.

ASSISTANT: Thank you for choosing us.