You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Could you please let me know how may I help you?

USER: Could you please help me with booking a economy class flight ticket?

ASSISTANT: Sure, I can help you to book an economy class ticket. May I know your origin and destination airport codes please?

USER: My airport codes are PHX and JFK.

ASSISTANT: Ok, please tell me your airlines preference.

USER: I am comfortable with any airline.

ASSISTANT: Ok, please tell me your preferable travel dates.

USER: I intend to travel on dates Dec 12 and Dec 14.

ASSISTANT: Can I know your good name please?

USER: I am Joshua Parker. I want to depart in the morning.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: Sorry to inform you that, there is no flights found in this route on the dates you have given.

USER: No worries, thank you for the information.

ASSISTANT: You are most welcome. Thank you for reaching us.