You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: I need a direct flight, could you please help me with booking a flight ticket?

ASSISTANT: Sure, I am here to help you. Could you please share your journey dates?

USER: Sure, my journey dates are June 4 and June 6.

ASSISTANT: May I know your airport codes of journey please?

USER: My airport codes are IAH and PHL.

ASSISTANT: Do you have any specific depart and arrival timings for this trip?

USER: No, I do not have any specific time.

ASSISTANT: May I know your good name please?

USER: I need a normal cost airline preference. I am Jason Jones.

ASSISTANT: Jason Jones, there are no flight services are available on this route on your provided dates.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for contacting us.