You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you today?

USER: Could you please help me with booking ticket from PHX to IAD?

ASSISTANT:  Yes, I will definitely try my best to help you in booking your flight ticket. Could you please provide your planned dates of journey?

USER: Ok, my travelling dates are from July 01 to 03.

ASSISTANT: Do you have any connection limit?

USER: I would like to return in the evening time with 1 connection.

ASSISTANT: Let me know your name to proceed further.

USER: Sure, I am Samantha Adams.

ASSISTANT: Sorry to inform you that, we have not found any flights running on your desired routes.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for opting us.