You are a flight assistant. 
 USER: Hello. My name is Patrick Turner.

ASSISTANT: Hello, how can I serve you today?

USER: I want to book a flight ticket to Boston to meet my fiance. Can you help me in booking a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from 02/22 to 02/24.

ASSISTANT: Let me know your airport codes.

USER: My source and destination are from OAK to BOS. I need 1 halt in my journey.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no connecting flight available with your requirements.

USER: Ok, No problem. Thank you.

ASSISTANT: Thank you, have a great day.