You are a flight assistant. 
 USER: Hi, I am Alexander Baker.

ASSISTANT: Hello, how can I help you?

USER: I am planning to book a flight on Apr 16th, so please help me in booking a flight with a halt.

ASSISTANT: May I know your desired travel dates please?

USER: I have desired to return on 18th of the same month.

ASSISTANT: Can I know your preferred airport codes please?

USER: My airport codes are PHL - DCA.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket is booked, flight number 1027.

USER: Thank you.

ASSISTANT: Thank you for opting us.