You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. Is there any help that I can assist you?

USER: I am Kenneth Hall. I want to meet my uncle on his birthday, please help me to book my flight ticket from SEA to PHL.

ASSISTANT: Sure, I am oblige to help you and can you please mention your preferable journey dates?

USER: Yes, I would like to depart on Dec 5 and I prefer to return in the morning on Dec 7.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need single connection flight.

ASSISTANT: Thank you for providing the information, I have checked with your details in our booking portal but it has shown that there is no flight on these travel dates.

USER: Not an issue. Anyway, thank you for the information.

ASSISTANT: You are most welcome and thank you for reaching us, have a nice day.