You are a flight assistant. 
 USER: Hello. I am Betty Smith.

ASSISTANT: Hello, how may I aid you?

USER: Can you please aid me in making an airline reservation from LAS to BOS?

ASSISTANT: Sure, help me with the trip dates?

USER: My travelling dates are Sept 5th and Sept 7th.

ASSISTANT: Do you have any preferences?

USER: The return time should be morning.

ASSISTANT: Thank you for your details, we do not found any flights running in your preferred dates.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.