You are a flight assistant. 
 USER: Hello, I am Amanda Adams.

ASSISTANT: Hello. How may I serve you today?

USER: Can you please help to me book a ticket from SFO - ORD?

ASSISTANT: Sure, please let me know if you need a connecting flight.

USER: Yes, I need a connecting flight.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My travelling dates are 05/25 to 05/27.

ASSISTANT: May I know your budget preference?

USER: My budget limit is 500.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.