You are a flight assistant. 
 USER: Hello, I am Larry Campbell.

ASSISTANT: Hello, how can I help you?

USER: I want to meet my college friend at San Francisco, SFO.

ASSISTANT: Ok.

USER: Can you help me in booking with a connecting flight?

ASSISTANT: Sure, we are mirthful to help you.

USER: Thank you.

ASSISTANT: Can you please let me know your journey dates?

USER: My travelling dates are from 10/23 to 10/25.

ASSISTANT: What is your take off airport code?

USER: I am boarding at Boston, BOS.

ASSISTANT: Please wait a minute, I will search a flight for you.

USER: Sure.

ASSISTANT: Thanks for your time.

USER: Ok.

ASSISTANT: Unfortunately, there are no flights found on your route.

USER: Ok, No problem. Thanks for the information.

ASSISTANT: Thank you for choosing us.