You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Janet Hall.

ASSISTANT: How can I help you? Nice to meet you Janet Hall.

USER: I would like to travel from DFW to PHL.

ASSISTANT: Sure, can you please mention your travel dates for booking flight ticket?

USER: The travel dates are from 04/09 to 04/11.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry no flights available as per your requested dates.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.