You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Please help me to book a flight ticket from ORD to DCA.

ASSISTANT: Sure may I know your name?

USER: Emily Mitchell.

ASSISTANT: Can I know your travelling dates?

USER: My journey dates are from July, 07 to July, 09.

ASSISTANT: Do you need a stopover in between journey?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: We found a flight of delta airline, flight number 1007 with the fare of 300.

USER: Please proceed for booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us.