You are a flight assistant. 
 USER: Hello, I am Anthony Jones.

ASSISTANT: Hello. How may I address you today?

USER: I would like to return on 01/11 after completing my research at Washington. Can you help me book a flight ticket from Phoenix on 01/09?

ASSISTANT: Sure, we are mirthful to help you. Kindly share your fare preference.

USER: I can spend up-to 200.

ASSISTANT: Could you please let me know if you need a connecting flight in between your journey routes?

USER: I choose a flight with single connection.

ASSISTANT: Kindly mention your takeoff and landing points to proceed further.

USER: From PHX, I need to reach IAD.

ASSISTANT: Ok, just a moment I will search best flight for you.

USER: Sure.

ASSISTANT: Thank you for waiting, we are unable to provide flight in between your journey routes due to heavy rain fall at your destination point.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for approaching us.