You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Nicole Lopez here.

ASSISTANT: How may I help you outt?

USER: I would like to travel from IAD to SFO for my business trip, can you please help me out with that?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Thank you for taking my request, I am planning to leave on 11/07 and please book my return ticket also on 11/09.

ASSISTANT: Please hold on.

USER: Please make sure that flight should be with connection 0.

ASSISTANT: Sorry, there are no flights found.

USER: Oh! sad to hear that. Anyway, I will find to alternative to complete my journey. Thank you for the information.

ASSISTANT: Thank you for choosing us.

USER: Welcome.