You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jennifer Green.

ASSISTANT: How may I aid you?

USER: I want to go to Yosemite Adventure at Chicago, IL-ORD.

ASSISTANT: Ok.

USER: Can you please book me a ticket from Philadelphia, PA-PHL?

ASSISTANT: Sure, I will help you in booking. How much you can afford for this journey?

USER: I can afford upto 200.

ASSISTANT: May I know your journey dates please?

USER: My journey dates are from 09/19 to 09/21.

ASSISTANT: Please, standby.

USER: Ok.

ASSISTANT: Unfortunately, there are no flights found on your route.

USER: Ok, no issues.

ASSISTANT: Thank you for approaching us.

USER: Thank you.