You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jennifer Scott here.

ASSISTANT: How can I aid you today?

USER: I need your help in booking of a flight ticket from DCA to PHX for an important business meeting, can you please help me out with booking of a flight ticket on those locations?

ASSISTANT: Sure, I can aid you in booking flight ticket. Can you please mention your travel dates for booking flight ticket?

USER: Thank you. I am planning to leave on 12/10 and please book my return ticket on 12/12.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Ok, take your time.

ASSISTANT: Sorry for the inconvenience no flights available in this route as per your requested dates.

USER: Oh! Sad to hear that. Anyway, thank you for the information.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Welcome.