You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

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

ASSISTANT: Can you please share your preferable journey dates?

USER: Sept, 27 and Sept, 29 are my preferable travel dates.

ASSISTANT: May I know your name please?

USER: Betty Thomas here.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a direct flight.

ASSISTANT: Is there any specifications?

USER: No, thanks.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: That's ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.