You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I would like to attend my sister's marriage anniversary at Houston, can you please reserve a flight ticket from LAX to HOU?

ASSISTANT: Yes, I am here to assist you. Kindly mention your planned travelling dates to proceed further.

USER: Sure, I am willing to travel on Sep, 23rd and return back on 25th.

ASSISTANT: Do you require any stopovers in your journey?

USER: Yes, I would like to take break in between my journey.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: Sure, I would like to travel in normal cost airline.

ASSISTANT: May I know your name please?

USER: Sure, my name is Donald Lee here.

ASSISTANT: Please be on hold for sometime, as I can check a flight for your journey with the best airlines.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for being patient, we didn't find any flights which matches your requirement.

USER: It's ok, not an issue.Thank you for your information.

ASSISTANT: Thank you for opting us, have a nice day.