You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you help me to book a flight ticket from LGA to LAX?

ASSISTANT: Sure, may I know your name please?

USER: Myself Ruth Walker.

ASSISTANT: May I know your planned travelling dates please?

USER: My travelling dates are Mar 27 and Mar 29.

ASSISTANT: May I know your class preference please?

USER: I am happy with any class.

ASSISTANT: May I know your connection limit please?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other requirements please?

USER: Yes, I prefer morning flight at the time of take off.

ASSISTANT: Sorry Walker, there is no flight found as per your travelling details.

USER: No issue, anyway thank you for checking.

ASSISTANT: Thank you for reaching us.