You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: Can you please help me in reserving the ticket from DCA to PHX?

ASSISTANT: Can you please share your preferable journey dates?

USER: I am planning my trip on July 29 and again I will return back on July 31.

ASSISTANT: May I know your name please?

USER: Myself Jason King.

ASSISTANT: Do you have any specifications?

USER: I would like to fly in economy class.

ASSISTANT: Is there any connection limit?

USER: I want to travel in single connection flight.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Not a big deal, anyhow thank you very much for your information.

ASSISTANT: Thank you for reaching us.