You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me to book a ticket from PHL to SEA?

ASSISTANT: Sure, I can help you with that. May I know your preferable travel dates?

USER: I want to start on Nov 3 and return on Nov 5.

ASSISTANT: Do you need any specific depart and arrival time for this trip?

USER: Yes, I want to depart in the morning.

ASSISTANT: Do you have any other specifications?

USER: Yes, I would prefer a connecting flight.

ASSISTANT: May I know your name for further process?

USER: I am Timothy Walker.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, there are no flights available based on your given requirements.

USER: Ok, not an issue. Thank you for your help.

ASSISTANT: Thank you for opting us.