You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am planning to attend music concert at IAD, can you please help me with booking a flight ticket from DFW?

ASSISTANT: Sure, I am here to help you with that. Can you please share your respective travel dates?

USER: I would like to take off on June 7 and return on June 9.

ASSISTANT: May I know your name please?

USER: My name is Paul Rodriguez.

ASSISTANT: Do you have any class preference?

USER: I would like to depart during afternoon time.

ASSISTANT: Can I know your connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I don't have any other specification.

ASSISTANT: There are no flights found on this route as per your travel dates.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us, have a great day.

USER: You are welcome.