You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Robert Wilson.

ASSISTANT: Good morning Wilson.

USER: I am going to participate in an international singing competition at Oakland, will you help me with booking a flight ticket?

ASSISTANT: Sure, please provide me your dates of travelling?

USER: I have to go on 04/30 and I will return on 05/02.

ASSISTANT: Can you provide me your codes?

USER: My source and destination airport codes are LAX and OAK.

ASSISTANT: Sorry, no flight are there on your requirement.

USER: Ok, not an issue, I will go by road. Thank you.

ASSISTANT: Thank you for reaching us.