You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Sarah Mitchell here.

ASSISTANT: How can I assist you today?

USER: I am planning to book a flight ticket to IAH from HOU, can you please help me out?

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

USER: Sure, my planned travelling dates are 08/05 and 08/07.

ASSISTANT: Please give me a moment.

USER: Ok, take your time.

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

USER: It's ok, thank you for the information.

ASSISTANT: Welcome, have a great day.