You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you today?

USER: Please book a flight ticket from DCA to IAH for attending a seminar in Houston.

ASSISTANT: Sure, I will help you with flight ticket booking and can I know your planned journey dates?

USER: Thank you, my boarding is on Oct 18 and please book my return ticket on Oct 20.

ASSISTANT: Do you have any connection limit?

USER: Yes, I will prefer single connection.

ASSISTANT: Please share your name for booking purpose.

USER: Sure, my name is Joshua Martin.

ASSISTANT: There is a flight 1000 in Delta airlines with your connection limit in an economy class, can I confirm your flight ticket booking?

USER: I am ok with this flight, you can proceed with booking now.

ASSISTANT: As per your request, I have confirmed your flight ticket booking in the above flight.

USER: Thank you for your assistance.

ASSISTANT: You are welcome.