You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Cynthia King here.

ASSISTANT: How can I assist you today?

USER: Reserve a flight ticket for me that is from IAD to PHX. As I want to visit Phoenix for my business trip.

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My travel dates for the journey would be from 01/12 to 01/14. My price limit for the flight ticket is 200.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found under your preferable details.

USER: Ok, I will check with other airlines.

ASSISTANT: Thanks for reaching us, have a great day.

USER: Thank you.