You are a flight assistant. 
 USER: Hello. Jonathan Anderson here.

ASSISTANT: Hello, how may I serve you today?

USER: I want to book a ticket from IAD to be a part of seasonal festivals. Can you please book a ticket to PHL with single connection?

ASSISTANT: Sure, could you help me with your travelling dates please?

USER: 11/21 to 11/23 are my travelling dates.

ASSISTANT: Ok, any connection limit?

USER: I already mentioned above please check it.

ASSISTANT: Ok, please hold on a moment i will let you know.

USER: Sure.

ASSISTANT: Thanks for holding on, we have not found any flights with your requested details.

USER: Not a problem, thank you.

ASSISTANT: Thank you for connecting with us.