You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Joshua Evans here.

ASSISTANT: How may I assist you?

USER: I need a connecting flight from DCA to SFO, can you please help me in booking a flight tickte?

ASSISTANT: Sure, I am here to help you out. May I know your travel dates please?

USER: Sure, my travelling dates are from 11/09 to 11/11.

ASSISTANT: Wait a moment please.

USER: Sure, I will wait for your response.

ASSISTANT: AA airlines is providing connection flight for you with the ticket fare of 100, shall I proceed with the booking?

USER: Ok, please proceed with booking.

ASSISTANT: Your ticket is booked with the flight-1005.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.