You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Melissa Gonzalez.

ASSISTANT: How may I help you today?

USER: Could you please help me in booking a flight ticket to DFW from SEA?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are Nov 4th and Nov 6th.

ASSISTANT: Do you need any specifications for this reservation?

USER: I want to return in the afternoon. And I need a connecting flight.

ASSISTANT: Sorry, there are no flight tickets available on your journey dates.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for reaching our service.