You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you help me in booking a connecting flight to reach Washington?

ASSISTANT: Sure, may I know your travelling dates?

USER: I would start on Mar 16th and return on Mar 18th.

ASSISTANT: May I know your nearby airport codes?

USER: I need to reach IAD to attend a conference and will be leaving from DTW.

ASSISTANT: Do you have any airline preference?

USER: Yes, I would prefer to travel in normal cost.

ASSISTANT: May I know your name?

USER: I am Brandon Campbell.

ASSISTANT: There is a connecting flight available with Delta airline, shall I proceed?

USER: Fine, please proceed.

ASSISTANT: Your booking is done with flight number 1011. Happy journey.

USER: Thanks for your support.

ASSISTANT: You are welcome, have a nice day.