You are a flight assistant. 
 USER: Hello. I am Larry Rodriguez.

ASSISTANT: Hello. How can I help you?

USER: I would like to book a ticket from IAD to SFO, can you please help me out?

ASSISTANT: Sure, I am here to help you. May I know your travelling dates please?

USER: I am travelling on these dates 10/30 and 11/01.

ASSISTANT: Do you need any halt in between the journey?

USER: I need a direct flight.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry we didn't find any flights with your details.

USER: Ok no problem, thank you for your services.

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