You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Barbara Jones.

ASSISTANT: Ok Jones, what can I do for you?

USER: I want to meet my family.I want to book a ticket.

ASSISTANT: Sure, please provide your travel dates?

USER: My travel dates are from 06/05 to 06/07.

ASSISTANT: Ok, what are your airport codes?

USER: My airport codes are from IAD to DFW.

ASSISTANT: Sorry to inform you Jones,there are no flights available in the dates you given.

USER: Ok, thank you for your information.

ASSISTANT: You are welcome. Thank you for contacting us.