You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you now?

USER: I want to travel from OAK to BOS. Can you help me in booking?

ASSISTANT: Sure, I am glad to help you with that. Please, share me your travelling dates.

USER: My travelling dates are from Sept 20 to Sept 22.

ASSISTANT: Do you have any limit on number of connections?

USER: I need a connecting flight.

ASSISTANT: Can you share me your other preferences for your journey?

USER: I do not have any other preferences.

ASSISTANT: Let me know your good name to proceed further for documentation purpose.

USER: My name is Brenda Wilson.

ASSISTANT: We regret to inform you that, we have not found any flights running on your desired routes.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for reaching us.