You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I need to reserve a ticket from IAD to DTW, can you help me in doing that?

ASSISTANT: Yes, can you tell me your dates of travel?

USER: My journey dates are Mar 09 to 11.

ASSISTANT: Do you have any preferences?

USER: I need a direct flight.

ASSISTANT: Give me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that there are no flights found on your requested criteria.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Can I know your name for documentation?

USER: Kathleen Collins here.

ASSISTANT: Thank you for contacting us.