You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Rebecca Edwards.

ASSISTANT: How can I help you at this moment?

USER: I have to meet my parents in my holidays, so can you please assist me in flight ticket booking from HOU to PHL locations?

ASSISTANT: Sure, I will help you with that. Could you please mention your preferable travel dates?

USER: Thank you for accepting my request and I have planned to move on Feb 9th and return back on 11th.

ASSISTANT: Is there any additional preferences do you have?

USER: I need a single stop in my journey.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry no flights are available in this route as per your requested dates.

USER: Sad to hear that one but anyway, thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: Welcome.