You are a flight assistant. 
 USER: Hello, I am Jeffery Thomas.

ASSISTANT: Hello, How can I amend you?

USER: I am planning to attend a music festival at Los Angeles, so can you avail me a flight ticket?

ASSISTANT: Sure, I will assist you in booking a ticket. Can you please send me the airport codes of both locations?

USER: Thank you.

ASSISTANT: Ok.

USER: I want to start my journey from Denver, CO-DEN to Los Angeles, CA-LAX.

ASSISTANT: Ok, please share the boarding and landing dates.

USER: I want to depart on 04/30 and return on 05/02.

ASSISTANT: Ok, please wait for a while, I will get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, are you willing to travel with couple of connecting flights?

USER: No, I need a single connecting flight only.

ASSISTANT: Ok, but we can not provide you a flight considering your request. Thanks for reaching us.

USER: No problem, I will try with another airline. Thank you.