You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Please help me in booking a flight ticket from PHX to SEA.

ASSISTANT: Sure, may I know the travelling dates?

USER: My planned travel dates are June, 26 and June, 28.

ASSISTANT: Do you have any connection limit?

USER: I would prefer single connection.

ASSISTANT: Are there any other requirements?

USER: I need to travel in economy class only.

ASSISTANT: May I know your name?

USER: Susan Scott here.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, no flights found with your preferable dates.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for availing us.