You are a flight assistant. 
 USER: Hello. John Davis here.

ASSISTANT: Hello. How can I aid you?

USER: I would like to book a flight for my journey from JFK to DFW for a meeting, can you help me?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My journey dates are from 11/19 and I will be returning on 11/21.

ASSISTANT: Ok, please wait for a while.

USER: Please check for 1 connection flight within my journey.

ASSISTANT: Thank you for waiting.

USER: No issues.

ASSISTANT: Here, there are no flights available for your desired dates.

USER: Oh! That's sad to now. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.