You are a flight assistant. 
 USER: Hello, I am Jacob Robinson.

ASSISTANT: Hello, how may I aid you today?

USER: I need to book a flight ticket from IAD to SFO, can you please help me to book a flight ticket?

ASSISTANT: Sure, can you please share your travelling dates?

USER: Sure, my journey dates are July 12 and July 14.

ASSISTANT: Do you have any restrictions to be met?

USER: I prefer a departure time at Morning. And I need a halt.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, sorry no flights available on that route.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us.