You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Dennis Hill. I want to book a ticket from IAH to DCA to meet my parents.

ASSISTANT: Ok, may I know your travelling dates?

USER: I am departing on 09/05 and return on 09/07.

ASSISTANT: There is a flight with number 1009 in airline UA.

USER: Please proceed for booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.