You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I would like to visit Dealey Plaza at Dallas, could you please help me in booking a ticket?

ASSISTANT: Ok, may I know your travelling dates?

USER: My travelling dates are 11/13 and 11/15.

ASSISTANT: Ok, may I know your source and destination codes?

USER: My airport codes are IAH and DFW.

ASSISTANT: May I know your name?

USER: My name is John Lopez.

ASSISTANT: Ok, I have found a flight ticket with 0 connection flight. Shall I proceed?

USER: Ok, please book the ticket.

ASSISTANT: Ok, your ticket has been booked with UA airline and 1014 as flight number.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.