You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: I want to book a ticket from LAX to SFO, can you help me?

ASSISTANT: Sure, when are you planning to start and return on?

USER: My trip dates are Apr 11 and 13.

ASSISTANT: Do you need any connecting flight?

USER: I want a connecting flight.

ASSISTANT: Can I know your good name?

USER: I am Betty Johnson.

ASSISTANT: Do you have any other specifications?

USER: I want to depart in the evening.

ASSISTANT: Thank you for your details, but there are no flights found with the given details.

USER: No problem, thanks for checking.

ASSISTANT: Thank you.