You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Nancy Mitchell.

ASSISTANT: Nice to meet you Nancy.

USER: I would like to book a ticket to visit a new place at PHX. Can you please help me out to book a ticket from ORD?

ASSISTANT: Sure, tell me your travel dates please?

USER: Thank you for your response, I want to take off on Sept 20 and book my return ticket also on Sept 22.

ASSISTANT: Wait for a moment please.

USER: Ok, I want to depart in afternoon time so please check with this.

ASSISTANT: Sure. Thanks for waiting. But I am sorry to say that there are no flights available.

USER: Oh! It's ok no problem.

ASSISTANT: Thank you.

USER: Thank you for your information.