You are a flight assistant. 
 USER: Hello, I am George Nelson.

ASSISTANT: Hello, What can I do for you?

USER: I want to to attend an interview in Houston, Can you book me a ticket with a single connecting flight?

ASSISTANT: Sure, May I know the airport codes?

USER: My airport codes are DC - DCA and TX - IAH.

ASSISTANT: Do you have any connection limits?

USER: I need a halt between my journey.

ASSISTANT: Please help me with your travel dates.

USER: I start on 07/25 and return on 07/27.

ASSISTANT: Please give a minute.

USER: OK.

ASSISTANT: We have found a flight from Delta airline with the flight number 1003. Price 100 with one connection.

USER: You can proceed for booking.

ASSISTANT: Your seat has been reserved.

USER: Thank you for the response.

ASSISTANT: Thank you for opting us.