You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Michelle Roberts here.

ASSISTANT: How can I assist you today?

USER: I would like to travel from HOU to IAH for a business conference, can you please help me out with booking?

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

USER: Ok, I am planning to move on 06/29 and please book my return ticket on 07/01.

ASSISTANT: Please give me a moment.

USER: Ok, take your time.

ASSISTANT: There is no flights found under your preferable details.

USER: Oh! So sad to hear. Thank you for the information.

ASSISTANT: Welcome, have a great day.