You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Ashley Anderson here.

ASSISTANT: How can I assist you today?

USER: I want to meet my sister-in-law, could you book my ticket from PHL to ORD?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My trip dates are 03/04 and 03/06.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found under your preferable details.

USER: It's ok, thank you.

ASSISTANT: Welcome, have a great day.