You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to book a flight ticket from PHL to ATL to meet my sister. Could you please help me with booking a connecting flight?

ASSISTANT: Sure, may I know your name?

USER: I am Mark Rodriguez.

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates are Aug 28 and Aug 30.

ASSISTANT: Which class do you prefer to travel?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other specifications?

USER: I would like to depart in the evening.

ASSISTANT: Ok, wait a minute.

USER: Sure.

ASSISTANT: Sorry, there are  no flights available on your travelling dates.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.