You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: I am Kimberly Thomas. I want to book a flight ticket from LGA to LAS. Can you help me with this booking?

ASSISTANT: Sure, may I know when are you planning to make your trip?

USER: 05/07 and 05/09 are my travelling dates.

ASSISTANT: How much fare are you expecting?

USER: 500 is my fare.

ASSISTANT: Thanks for sharing your credentials. There are no flights available on your requested dates.

USER: No issue, I will choose other alternative. Thank you.

ASSISTANT: Thank you for opting us.