You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, what can I do for you today?

USER: I am Shirley Wright.

ASSISTANT: Thanks for your name.

USER: We are planning to visit the Willis Tower in Chicago with my childhood friend's. Could you please help me for booking a flight ticket?

ASSISTANT: Sure, we will help you. Let me know your journey codes.

USER: My source code is TX-AUS and destination code is IL-ORD.

ASSISTANT: Ok, please share your planned dates.

USER: I would like to travel on 03/28 and return on 03/30.

ASSISTANT: Ok, mention your price limit.

USER: I can afford up to 500.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for your time, no flights were available based on your schedule.

USER: Ok, no worries at all. Thank you.

ASSISTANT: Thanks for approaching us.