You are a flight assistant. 
 USER: Hi. I am Helen Harris.

ASSISTANT: Hello, how can I serve you today?

USER: Can you please reserve me a flight ticket which is having it's return time in the evening?

ASSISTANT: Sure, please share your source and destination airport codes.

USER: My airport codes are BOS - JFK.

ASSISTANT: When are you planning to depart and return?

USER: My trip dates are 09/09 - 09/11.

ASSISTANT: Do you prefer either economy or business class?

USER: I am ok with any class.

ASSISTANT: Is there any other request you have for this journey?

USER: I need a single connection.

ASSISTANT: Sure, please allow me a minute to find a suitable flight for you.

USER: Ok.

ASSISTANT: Sorry, there are no flights available on given dates from you.

USER: No issues, thank you.

ASSISTANT: Thank you for checking it with us.