You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Katherine Scott.

ASSISTANT: Scott, how can I support you today?

USER: I would like to visit my friend's place at Houston, can you please help me to book the flight ticket from LAX to IAH?

ASSISTANT: Please share your itinerary dates.

USER: I would like to start my journey on 08/16 and also book the return ticket on 08/18.

ASSISTANT: Please wait for a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, no flights are available on your route.

USER: Not an issue, I will find an other way. Thank you very much for checking.

ASSISTANT: It's my pleasure, have a great day.