You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Alexander Phillips here. I would like to travel from BOS to OAK. can you please help me to book a ticket?

ASSISTANT: Sure, please provide me your journey dates.

USER: My travelling dates will be on 08/26 to 08/28.

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

USER: I need a connecting flight.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: I regret, there is no flight available on your route.

USER: Not a problem, thank you.

ASSISTANT: Thank you for opting us.