You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Catherine Thomas here. I would like to book a ticket from DCA to SEA, can you please help me with that?

ASSISTANT: Sure, can you please share your travel dates?

USER: The travel dates are from 07/30 to 08/01.

ASSISTANT: Let me check for the availability of flight.

USER: Ok.

ASSISTANT: Catherine, there is a flight available with price 100 and the connection is 1 with Delta airline. Would you like me to proceed with the booking?

USER: Please proceed with booking.

ASSISTANT: Your booking is confirmed with 1028 flight number.

USER: Thank you for your help.

ASSISTANT: You are welcome. Thank you for contacting us.