You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I render you?

USER: I am Andrew Turner. Can you please book a flight ticket from DTW to IAD?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: May I know your trip dates?

USER: My journey dates on 09/03 and 09/05.

ASSISTANT: Do you have any other requirements?

USER: I need a connecting flight.

ASSISTANT: There are no flights with your specifications.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for your kind approach.