You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to book a flight ticket to IAD from AUS. Can you help me with it please?

ASSISTANT: Sure, please mention your travelling dates.

USER: Sure, I want to fly on 11/21 and return date is 11/23.

ASSISTANT: Please give me a moment.

USER: Ok, please take your time.

ASSISTANT: Will you mention the name for the process?

USER: Sure, please book the flight ticket in the name Dennis Gonzalez.

ASSISTANT: There is no flights found under your details. Thank you for reaching us, have a great day.

USER: That is ok, no problem I will plan my trip any other day. Thank you for assisting me.

ASSISTANT: Welcome.