You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Dorothy Edwards. Please book me a ticket from BOS to SFO to meet my family.

ASSISTANT: Sure, do you need any halt in between the journey?

USER: No, I prefer direct flight.

ASSISTANT: Please share your travelling dates.

USER: I have planned to travel on 07/19 and 07/21.

ASSISTANT: Is  there any other specifications on your trip?

USER: No.

ASSISTANT: Please stand by.

USER: Ok.

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

USER: Ok, no problem.

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

USER: Thank you.