You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Emily Hall.

ASSISTANT: Hall, may I know what kind of service you are looking for?

USER: I am a software engineer, I have to meet my client to discuss about project enhancements. Could you book my ticket?

ASSISTANT: Sure, I am glad to help you. May I know your itinerary dates?

USER:  I want to go for two days trip from 04/01 to 04/03.

ASSISTANT: Please share your origin and destination airport codes.

USER: My nearest airport code is DFW and destination airport code is PHX.

ASSISTANT: Please give me a moment to check for any available flight.

USER: Ok, take your time. I will wait for your reply.

ASSISTANT: Sorry Emily, no flight is available on your planned dates.

USER: Ok, not an issue. Thank you for assisting me.

ASSISTANT: Thank you for reaching us, have a nice day.