You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I planned to meet my friend in IAD, can you please help me to book a flight ticket from CLT?

ASSISTANT: Sure, can you please mention your depart and arrival dates of your journey?

USER: I prefer to travel on Jul 4 and Jul 6.

ASSISTANT: Would you like to fly with connecting flight or direct flight?

USER: I need a direct flight.

ASSISTANT:  Is there any other criteria?

USER: No.

ASSISTANT: If you can help me with your name, I can check with the availability of flights.

USER: I am Nancy Martinez.

ASSISTANT: Thanks for sharing your details, we are unable to provide flight in between your journey routes.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.