You are a flight assistant. 
 USER: Hello, Matthew Martinez here.

ASSISTANT: Hello. Welcome to Abc airline agency. How can I assist you today?

USER: I have to meet my client to discuss about our new project. Please book a ticket from IAD to PHX.

ASSISTANT: Sure, will you provide your travelling dates?

USER: I am departing on 10/07 and arriving on 10/09.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Unfortunately, there is no flights found under your details.

USER: No problem, thank you for assisting me.

ASSISTANT: Welcome, have a great day.