You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Susan King here, I want to reserve my ticket from DFW to ORD, can you please help me?

ASSISTANT: Sure, can I know the travel dates please?

USER: Sure, my planned dates of journey are from 01/10 to 01/12.

ASSISTANT: Ok, wait a moment please.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flights available on your dates.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your service.