You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ruth Nelson.

ASSISTANT: How may I assist you?

USER: Could you please book a flight ticket to PHL from HOU?

ASSISTANT: Sure, may I know your planned journey dates please?

USER: I have planned to travel on June 23 and return back on June 25.

ASSISTANT: Do you have any connection preference?

USER: I need a single connecting flight.

ASSISTANT: May I know your departure and arrival timings?

USER: I want to depart on the afternoon.

ASSISTANT: Do you have any other specifications?

USER: I don't have any other specifications.

ASSISTANT: Ruth Nelson, no flights has been found on your planned journey dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.