You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Kathleen Harris.

ASSISTANT: How may I guide you today?

USER: Will you help me in booking the flight ticket from DTW to PHL?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can you please share your preferable journey dates?

USER: My journey dates are 07/10 and 07/12.

ASSISTANT: Please wait for a while.

USER: Ok, take your own time.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Ok, not an issue. Thank you for helping me.

ASSISTANT: Thank you for contacting us.