You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brandon Adams.

ASSISTANT: How can I help you today?

USER: Can you please book a flight ticket from OAK to IAD?

ASSISTANT: Sure, can you share me your preferable dates?

USER: Sure, I have planned to travel on dates of Nov 06 and Nov 08.

ASSISTANT: Do you have any preferences?

USER: Yes, I need connection 1 but I am also fine with direct flight.

ASSISTANT: Ok, wait a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, no flights are available on your desired route.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for contacting us.