You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you?

USER: I am Kimberly Collins. I am planning to travel from DEN to DCA to attend my friend's birthday, can you help me in booking?

ASSISTANT: Sure, may I know your journey dates?

USER: I want to depart on 01/19 and return on 01/21.

ASSISTANT: There is a connecting flight with fare 200 in airline Delta, the number is 1013.

USER: Please proceed for booking.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.