You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Jerry Davis here.

ASSISTANT: How may I help you?

USER: Can you please help me in booking a ticket from JFK to DFW?

ASSISTANT: May I know your trip dates?

USER: Sure, my journey dates are 06/27 and 06/29.

ASSISTANT: Ok, please wait a minute..

USER: I'll wait for your response.

ASSISTANT: There is no flights available on this dates.

USER: That's ok, thank you for giving the information.

ASSISTANT: Most welcome.