You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I need to attend my sister's baby shower party, can you please book the ticket from HOU to DFW?

ASSISTANT: Sure, let me know your travelling dates.

USER: Sure, I would like to depart from my source location on 25th April and I want to return back by 27th April.

ASSISTANT: Do you want connecting flight or direct flight?

USER: I need direct flight.

ASSISTANT: Do you have any other requirements?

USER: No, I don't have any other specifications.

ASSISTANT: May I know your name please?

USER: My name is Amanda Martinez.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Oh! That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for opting us.