You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Frank Baker. I am planning to visit Philadelphia from IAH to PHL. Can you find a flight ticket for me?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Sure, my itinerary dates are on 10/23 and return on 10/25.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found under your preferable details.

USER: Ok, not a problem. Thank you for your information.

ASSISTANT: Thanks for reaching us, have a great day.