You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER:  I have planned to book a ticket from SFO to IAD, can you assist me in booking my ticket?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My preferred dates are Aug 5th and Aug 7th.

ASSISTANT: Do you require any stopovers in your journey?

USER: I need one break between my trip.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: No. you can proceed booking.

ASSISTANT: May I know your name please?

USER: Rebecca Hall.

ASSISTANT: Ok, please wait a minute I will get back to you with the flight details.

USER: Ok.

ASSISTANT:              Thank you for being patient, we didn't find any flights which matches your requirement.

USER: No problem, thank you for searching.

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