You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you reserve me a ticket from ORD to DFW?

ASSISTANT: Sure, may I know your planned trip dates?

USER: My journey dates are June 25 to 27.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Are there any other requirements?

USER: Please ensure that my depart time is morning and return time is evening.

ASSISTANT: Please forward your name.

USER: I am George Davis.

ASSISTANT: There are no flights found on your specified travel dates.

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

ASSISTANT: Thank you.